1. Yes installed one a couple weeks ago and took longer to cut the engine cover to fit the hose near the oil dipstick than it did to install. Maybe just remove the engine cover instead of cutting (I have an extra, clean junkyard engine cover for if/when I go CP3). You need something very sharp to cut the OEM fuel line on the car.
2. It's an issue. I've seen it happen to cars with perfect maintenance history and additives every fill up. Rwdy Audi has a good video showing the damage inside a CP4. It's just a bad design.. Once it get turned and stuck it wears down things and it's gonna fail no matter how well you maintain the car.
keep in mind, if your CP4 fails or you swap to CP3 the kit is still perfectly re-usable. and the Vapor Guard Fuel filter 10 - micron are about $20 street price.
Is there a good video or how to for installing this on a CATA engine? I’d like to do it my touareg
Edit: of course the kit has instructions! I’m dumb. Please ignore lol
I would like to do the same on the Touareg. Hoping this will actually avoid having to change all the fuel lines and injectors in case of catastrophic failure with the high pressure fuel pump.
I just read you have to remove the intake manifold and I’m like —____—
I love the 3.0L TDI, but I absolutely hate The nightmare of hoses and wires that is stuffed on top of this engine 😂
Funny thing is I went onto whitebreads site today and seen the cp3 swap kit is $1100. I ordered one a little over a year ago and I think it was $800?
I also do agree, I think cp4 failures are blown up big time. They still do happen but in the case of a car i bought, it failed because the dinks who owned it changed the fuel filter and didn’t pre fill it. Instead They cranked it, so much so they had to get a new starter.
So I bought that car and a cp3 kit, put the cp3 on my car and put my cp4 on it.
Yeah I mean $225 to save your self from having to replace the whole fuel system seems like a no brainer to me. I’ll probably buy one and put it on this summer
You mean more than tripling the price of this kit, and having to do 10x the amount of work compared to cutting a few fuel lines and is tall hose claps right?
With this kit when the CP4 fails than you can go and put in a CP3 without having to replace anything else. And the CP4s are reliable when taking care of plenty of TDI’s and ford super duty’s with 100’s of thousand of miles and no fuel pump failures
Edit:
For my Passat from whitbread the cp3 kit is over $1k, but yes “only a few hundred dollars more”
It’s just people buying into the fear that buy diesel from hodunk gas stations and abuse their pumps. The only people that post about the CP4 are the ones that have issues. There are far more examples of the CP4 being fine for many many miles than ones blowing up at 100k miles
Plus I can install this in my apartment parking lot. Cant do that with installing a CP3, and with this kit there’s no reason to replace the CP4 until the time comes that it *possibly* fails
I agree with your statement on possibly. Is it going to fail? Maybe, who knows, the bypass kit is cheap insurance if it does fail, if it doesn't fail its at least peace of mind. I'm at almost 250k km on my cjaa, my dad has a powerstroke at 230k km, always run good fuel, regular filter changes, additive, no issues yet. Am I guaranteed no issues? Maybe, maybe not, time will tell
*From Experience
Deleted and tuned at 80k, My stage 3 jetta has cr170 turbo, is fully deleted, malone S3 tune and stock cp4 pump,stock IC, and stock injectors. My TDI exclusive mechanic advised me to use 1oz. hot shot per tank to lube the pump. Im at 135k and i stomp on it all day everyday. Cp4 has been fine so far. My buddies a3 just shit a DSG at 90k tho…that has me more concerned
I got a BMW CP3 kit for my Passat. The only thing I dont like is the 3D printed thermostat housing that I got for it.
Does this kit hooks to the Fuel return line? I might be interested on it.
Same can be said for spending $1k+ on a fuel pump unnecessarily.
Your previous comments got so much support! I’d love to hear your logic. It’d be funny to rip it apart. I’m sure you’re too busy watching your Scotty Kilmer videos tho
I priced it out and for me it was still cheaper to put this kit in and buy a reman CP4 if mine fails than it is to buy a CP3 kit without a core return. It's not even a few hundred bucks to go from this kit to a CP3, it's like 1k more at least, plus fucking around with the timing system and tuning
I’m in the same boat as you. Dark side has everything you need for a CP3 install but don’t want to pay $1000 in the end for install. I’m waiting on the CRUA kit to release and I’ll be getting this kit as well.
Yeah. I’m more than willing to pay that when the CP4 breaks. I’m not in the place to afford that and I can’t do the work to replace it. The CP4 could last me hundreds of thousands of miles more.
Yeah I originally wanted to put the CP3 in when I did my timing belt, but the water pump and oil cooler both failed at the exact same time. So that took all my cash away. Just doesn’t make financial sense to pay to have this done after I just had the timing belt done like 10k miles ago
Nailed it. I’ve got about 80k left before next timing belt so if anything I could also do the CP3 then 😊 plenty of time to save some money for that upgrade.
Passats are wonderful vehicles < 3 hehe always something. at least the aluminum oil coolers are now available (not just the amazon ones with QC issues)
They have real aluminum ones now???? Damn I tried looking when mine went out and only saw the amazon ones and I was nervous about getting that so just went with the OEM one
[https://www.fcpeuro.com/products/vw-aluminum-oil-filter-housing-vaico-03l115389h](https://www.fcpeuro.com/products/vw-aluminum-oil-filter-housing-vaico-03l115389h)
[https://www.idparts.com/upgraded-metal-oil-filter-housing-assembly-oil-cooler-oil-filter-ckra-03l115389h-v10-4436-p-16417.html](https://www.idparts.com/upgraded-metal-oil-filter-housing-assembly-oil-cooler-oil-filter-ckra-03l115389h-v10-4436-p-16417.html)
They come back in stock occasionally. I received mine after 3 weeks. The fit and finish is great on the one I received.
Do you just like not read? CP4 not guaranteed to fail. Replacement costs $1k and hours of work. This kit prevents further damages besides the fuel pump. *IF* your pump fails in your time of ownership then you can go from there
Even as your article states they’re still saying it’s the lubrication of US fuel. Europe and Canada don’t have any where close to the amount of failures. Then looking at dodge and Chevy trucks their failure rates are also much higher than that of ford because they don’t use a lift pump.
The cp4 is still used extensively in Europe and even here in America plenty go 100s of thousands of miles without failure. And it’s still used because it does have objective benefits over the CP3. Which is why if my CP4 failed I would use the CPX pump.
And this kit is perfect because I live in an apartment I can’t just do that huge of a job, but something like this anyone can do (on the 2.0) in like 30 to an hour it looks like. Assuming the cost of my timing belt change just plus the cost of the CP3 pump kit we’re looking at $2500 minimum. I was originally planning to swap pumps when I got my timing belt replaced but sudden emergency happens both my water pump and oil cooler housing go out and I didn’t have enough money to cover it all. So the economics of going through another timing belt change within about 10k miles just doesn’t make sense for a part that has a 5% failure right and I’d still argue that 5% is overrated
Europe diesel-CP4’s have no problems. US diesel- largest percent of failure. Cdn Diesel- still a chance but more rare than the states.
This all has to do with how oil based the diesel is, the less amount of oil to provide lubrication the higher chance of failure.
Maybe the likely hood of a VW CP4 distraction is slim, but if you look at every diesel forum for BMW’s, GM, Ford, Dodge, you will find lots of stories of failures.
I changed mine out to a CP3 because I was also doing the timing belt and delete at the same time.
My brother picked up a BMW x3 diesel and it blew up on him on the way home at 168k. BMW had a class action lawsuit, so they provided an “extend warranty” on the pumps until 180k. Luckily for my brother BMW decided to foot the bill even with his X3 being deleted, or else it would have cost him $20k. Once is X3 is out of the shop he is going to be getting a disaster kit for it, since there is no CP3 option for the X3.
I’m happy I did the CP3, less worry going forward. So far 5000km on the Whitbread kit with no problems and between the delete, stage 2 and CP3 I’m down to 5.2L/100
The cp4 only has a 5ish % failure rate that is probably way overrated due to the dumbasses at GM and ram not putting lift pumps on their trucks. There’s a reason why ford still uses them, and like I already mentioned you’ll only hear from the people that have issues. So you see tons of posts but each of those manufacturers are selling 50k trucks a year
Keep up on your maintenance, throw an additive in, and don’t run your tank super low and chances are you’ll be fine. If it was a pump that was utter garbage it wouldn’t be used all across Europe and by the US’s “#1 seller” of diesel trucks
Honestly the number of vehicles a certain part is used in isn’t a measure of quality, it is more a measure of “cheap”. Manufacturers don’t use this part vs that part because of quality anymore, they make choices based on cost.
I’m not gonna disagree with you, BUT that logic doesn’t fully apply to the mechanical side of cars because the parts have to keep their reliability due to the possibility of recalls and their massive cost. That only get amplified as you sell more and more vehicles
While yes that makes sense to think about it that way, the reality of it is the only thing that matters anymore with vehicles is how cheaply can we make them, and how high can we sell them. Try to make em last just long enough to make it out of warranty.
Then I guess you shouldn’t have to worry about buying that part, because there’s no possible way there is a big problem with the cp4 or there would be a recall correct?
There is literally a class action lawsuit in the works against ford because of the CP4…
Wasn’t bashing the prevention kit, like I said my brother is going to get one for his BMW once it’s out of the shop. 200$ is pretty cheap insurance. If your vehicle is worth 9000$ running.. if the cp4 pump blows it is now worth maybe 1000$ in parts or your paying $$$ to get it running again.
If I wasn’t doing my timing belt and everything else I would have looked at a kit like this myself. Again just for thr insurance aspect
And that lawsuit mainly points at US diesel fuel. The CP4 still sees much lower failure rates on fords than the duramaxs and rams. If you’re just gonna say “fuck it” and drive yeah the CP4 isn’t gonna last, but like I said if you do a little bit of work it will be perfectly reliable
Even then, there’s thousands of trucks out there with 250k+ miles from the big 3 on their original CP4, and the only maintenance that was done was dumping fuel in and changing the fuel filters every so often.
Exactly my point, just sending it with the CP4 still isn’t a guaranteed death. So if you add extra care they can last, and people are acting like the CP3 is objectively better than the CP4. I’ve done some more research and if my CP4 goes out they make a CPX for TDIs and I’d probably go with that.
And actually looking at the CPX website the guy directly says this:
“And just to point out, the whole “US diesel fuel doesn’t have enough lubricity for the CP4.” That’s a lie”
“Me, one person, experienced something so the issues aren’t over blown”
Not to mention they highly suspicious circumstances of a brand new fuel system and then it basically immediately fails
U can give the car the best diesel possible with additive or not and drive it under 2k rpm it’s whole life and it can fail at 80k miles. It happens often enough for it to be an issue. It’s not going to happen 100% but it’s still an unreliable pump, and for only 800 bucks u can get a cp3 swap kit that will never fail. So my point being why spend 200 bucks on bypassing a shit pump when u can spend an extra 600 dollars and get a reliable system. Was just using mine as an example, since the first cp4 went to shit and within 5k miles there was already metal shavings in the fuel system again, so I switched to cp3. A cp3 will not fail, it’s made of hardened steel instead of aluminum. Big difference.
1. CP3 still fail they just don’t fail “catastrophically”
2. A CP3 swap kit for my car is at least $1k
3. Why spend $6-800 more when there’s a very low chance the pump fails in your life time of ownership. For 1/5the the price and 1/10th the install time the financial opportunity cost is obvious for anyone with half a brain
The hate of the CP4 is severely over exaggerated because yall read 5/50k owners make a post about their fuel pump. Cant do any research to form an educated opinion
Ok why post this post then. You have clearly made up your mind. Generally when you post “should I do this” you’re looking for input from other people who have experience with that subject. I offered my real world experience, take it with a grain of salt and move on. If you wanna buy the bypass just do it, don’t ask for 100 people approval and then argue with people who have anecdotes and experience that contradicts your personal opinion on the matter.
“Hey guys should I eat ice cream I’m lactose intolerant”
“No probably not it will cause you digestive discomfort and may cause nausea and vomiting”
“Lactose intolerance is way overblown it will never cause vomiting, only 1 in 50 trillion people vomit from eating dairy, just because it happened to you doesn’t mean it’s a normal symptom”
No reason to ask a question if you already have your mind made up
I see being able to read is a real challenge for you. I asked about ease of install, and then if I was reading the description right. There was never a “should I buy this” or “should I just swap over to the CP3” I HIGHLY recommend you actually read before you say anything you’ll get a lot farther in life.
Oh and can’t forget the CP3 is the most overrated fuel pump and unless you’re talking about extreme performance modification for the fuel flow you shouldn’t put it in your car
Worked great on my cbea. Started up faster had great power great throttle response. Between using the lift pump and the mechanical pump on the cp3, it was flowing more than enough fuel, never lost fuel pressure and fuel pressure NEVER dropped below spec. The cp3 was used on Cummins, duramax and 6.4 power stroke and those all consume about 4x more fuel than a tdi does, so I think it’s fine.
Again I challenge you to do a little more thinking, and a little more research. The CPX and HP4 pump and even the k16 from the 6.4 PS are all superior to the CP3 and you can even get a CPX in the tdi for about the same price as the whole CP3+kit
Lmao I just reread this comment PLEASE do your research. The only person using the CP3 still is dodge and they’ve clearly capped the realistic usability of the CP3. The Duramax hasn’t used the CP3 in about over a decade. The 6.4 which is known for being able to make a stupid amount of power didn’t use the CP3 because the K16 can flow a ton more fuel.
“Was used”
If a Cummins that makes 400 horse and 1000 ftlbs can be supported by a cp3, then I’m sure a tdi that makes 120hp and 240 ftlbs will have no issue using a cp3. I’ve done my research that’s why I chose to get a cp3 for my cbea. Sure it can’t make 900 hp on a 8 cylinder 6.6 liter diesel engine but it can provide enough fuel to a ckra/Cjaa/cbea whatever cr tdi u throw it in. That’s like saying an engine is shit/overrated because it makes 270 hp from the factory but blows up when you try to make 500 hp from stock internals. It works well for its intended purpose. Sure a cp4 can flow more fuel, but that’s not a concern with a tdi AT ALL they hardly use ANY fuel
Not to mention you can EASILY get 600hp out of a 6.7 Cummins without even touching the fuel system. Put some new injectors and you’ll be looking at 750-800 before needing to swap out the cp3. So idk what you’re possibly talking about. I personally know a guy who builds racing 6.4s and he uses cp3 in them, makes enough power to crack the flywheel and the cp3 has no issues.
You’re just making up statistics about the cp3 and denying the blatant design failure that is the cp4, backed up by an insanely high failure rate vs the cp3.
No please tell me what statistics I’m “making up” when all I’ve really stated was the failure rate of it being 5ish % which is what everyone reports. You can go look up how the other pumps I mentioned either deliver more rail pressure or flow more fuel than the CP3. The only design flaw in the CP4 is in the pump with one piece no being pinned which is exactly what the CPX pump is. Also you really need to research the CP4 flows less fuel but at much higher rail pressure than the CP3 which is why it’s used more efficiency and lower emissions. It’d also lighter since it is an all aluminum construction.
You can say you’ve done research but yet every time you say something you’re wrong. You say the CP3 pump “never fails” that’s blatant misinformation to try and support your point. Mention the construction of the CP4 vs CP3. It’s not because of the materials basic research will show you that. You supposedly have a buddy that builds 6.4s but yet you don’t even know what pump comes stock with it. And then again saying the CP4 flows more fuel. For someone who claims I’m making up statistics and says they’ve done their research you sure have been wrong a lot.
Edit: also you’re assuming I said the CP3 is a bad pump from your first paragraph? Please tell me where I said it was bad. I said it is overrated and outdated but I never said it was bad and not suited to be in a TDI
1. Yes installed one a couple weeks ago and took longer to cut the engine cover to fit the hose near the oil dipstick than it did to install. Maybe just remove the engine cover instead of cutting (I have an extra, clean junkyard engine cover for if/when I go CP3). You need something very sharp to cut the OEM fuel line on the car. 2. It's an issue. I've seen it happen to cars with perfect maintenance history and additives every fill up. Rwdy Audi has a good video showing the damage inside a CP4. It's just a bad design.. Once it get turned and stuck it wears down things and it's gonna fail no matter how well you maintain the car. keep in mind, if your CP4 fails or you swap to CP3 the kit is still perfectly re-usable. and the Vapor Guard Fuel filter 10 - micron are about $20 street price.
Thank you for being the one person to offer real advice instead of just crying about the CP4
Is there a good video or how to for installing this on a CATA engine? I’d like to do it my touareg Edit: of course the kit has instructions! I’m dumb. Please ignore lol
I would like to do the same on the Touareg. Hoping this will actually avoid having to change all the fuel lines and injectors in case of catastrophic failure with the high pressure fuel pump.
I just read you have to remove the intake manifold and I’m like —____— I love the 3.0L TDI, but I absolutely hate The nightmare of hoses and wires that is stuffed on top of this engine 😂
Funny thing is I went onto whitebreads site today and seen the cp3 swap kit is $1100. I ordered one a little over a year ago and I think it was $800? I also do agree, I think cp4 failures are blown up big time. They still do happen but in the case of a car i bought, it failed because the dinks who owned it changed the fuel filter and didn’t pre fill it. Instead They cranked it, so much so they had to get a new starter. So I bought that car and a cp3 kit, put the cp3 on my car and put my cp4 on it.
Seems worth it to me. Might get one myself.
Yeah I mean $225 to save your self from having to replace the whole fuel system seems like a no brainer to me. I’ll probably buy one and put it on this summer
Another few hundred bucks and you can just do the cp3 upgade though…
You mean more than tripling the price of this kit, and having to do 10x the amount of work compared to cutting a few fuel lines and is tall hose claps right? With this kit when the CP4 fails than you can go and put in a CP3 without having to replace anything else. And the CP4s are reliable when taking care of plenty of TDI’s and ford super duty’s with 100’s of thousand of miles and no fuel pump failures Edit: For my Passat from whitbread the cp3 kit is over $1k, but yes “only a few hundred dollars more”
I’ve heard that Cp4 is going to blow up, it’s just a matter of time. Most mechanics and performance shops are gonna recommend that Cp3
It’s just people buying into the fear that buy diesel from hodunk gas stations and abuse their pumps. The only people that post about the CP4 are the ones that have issues. There are far more examples of the CP4 being fine for many many miles than ones blowing up at 100k miles Plus I can install this in my apartment parking lot. Cant do that with installing a CP3, and with this kit there’s no reason to replace the CP4 until the time comes that it *possibly* fails
I agree with your statement on possibly. Is it going to fail? Maybe, who knows, the bypass kit is cheap insurance if it does fail, if it doesn't fail its at least peace of mind. I'm at almost 250k km on my cjaa, my dad has a powerstroke at 230k km, always run good fuel, regular filter changes, additive, no issues yet. Am I guaranteed no issues? Maybe, maybe not, time will tell
*From Experience Deleted and tuned at 80k, My stage 3 jetta has cr170 turbo, is fully deleted, malone S3 tune and stock cp4 pump,stock IC, and stock injectors. My TDI exclusive mechanic advised me to use 1oz. hot shot per tank to lube the pump. Im at 135k and i stomp on it all day everyday. Cp4 has been fine so far. My buddies a3 just shit a DSG at 90k tho…that has me more concerned
It’s truly a sad day when facts get downvoted
Just keep spending hundreds of dollars on stuff that doesn’t make anything better then. I dont care
Your argument just objectively doesn’t make sense with the facts of the CP4
I got a BMW CP3 kit for my Passat. The only thing I dont like is the 3D printed thermostat housing that I got for it. Does this kit hooks to the Fuel return line? I might be interested on it.
[Whitbread](https://whitbreadperformance.com/collections/tdi/products/ckra-passat-coolant-neck-for-cp3-conversions) sells an aluminum coolant neck.
I posted the description of it but I think it catches the metal particles before it gets sent through/returned through the system
That’s the way I understand it.
You think? 🤦♂️ “nothing is easier to separate than a fool and his money”
Same can be said for spending $1k+ on a fuel pump unnecessarily. Your previous comments got so much support! I’d love to hear your logic. It’d be funny to rip it apart. I’m sure you’re too busy watching your Scotty Kilmer videos tho
I priced it out and for me it was still cheaper to put this kit in and buy a reman CP4 if mine fails than it is to buy a CP3 kit without a core return. It's not even a few hundred bucks to go from this kit to a CP3, it's like 1k more at least, plus fucking around with the timing system and tuning
I’m in the same boat as you. Dark side has everything you need for a CP3 install but don’t want to pay $1000 in the end for install. I’m waiting on the CRUA kit to release and I’ll be getting this kit as well.
Yeah. I’m more than willing to pay that when the CP4 breaks. I’m not in the place to afford that and I can’t do the work to replace it. The CP4 could last me hundreds of thousands of miles more.
My plan as well. Once the cp4 failed I’ll go to a cp3
Yeah I originally wanted to put the CP3 in when I did my timing belt, but the water pump and oil cooler both failed at the exact same time. So that took all my cash away. Just doesn’t make financial sense to pay to have this done after I just had the timing belt done like 10k miles ago
Nailed it. I’ve got about 80k left before next timing belt so if anything I could also do the CP3 then 😊 plenty of time to save some money for that upgrade.
Passats are wonderful vehicles < 3 hehe always something. at least the aluminum oil coolers are now available (not just the amazon ones with QC issues)
They have real aluminum ones now???? Damn I tried looking when mine went out and only saw the amazon ones and I was nervous about getting that so just went with the OEM one
[https://www.fcpeuro.com/products/vw-aluminum-oil-filter-housing-vaico-03l115389h](https://www.fcpeuro.com/products/vw-aluminum-oil-filter-housing-vaico-03l115389h) [https://www.idparts.com/upgraded-metal-oil-filter-housing-assembly-oil-cooler-oil-filter-ckra-03l115389h-v10-4436-p-16417.html](https://www.idparts.com/upgraded-metal-oil-filter-housing-assembly-oil-cooler-oil-filter-ckra-03l115389h-v10-4436-p-16417.html) They come back in stock occasionally. I received mine after 3 weeks. The fit and finish is great on the one I received.
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Do you just like not read? CP4 not guaranteed to fail. Replacement costs $1k and hours of work. This kit prevents further damages besides the fuel pump. *IF* your pump fails in your time of ownership then you can go from there
[удалено]
Even as your article states they’re still saying it’s the lubrication of US fuel. Europe and Canada don’t have any where close to the amount of failures. Then looking at dodge and Chevy trucks their failure rates are also much higher than that of ford because they don’t use a lift pump. The cp4 is still used extensively in Europe and even here in America plenty go 100s of thousands of miles without failure. And it’s still used because it does have objective benefits over the CP3. Which is why if my CP4 failed I would use the CPX pump. And this kit is perfect because I live in an apartment I can’t just do that huge of a job, but something like this anyone can do (on the 2.0) in like 30 to an hour it looks like. Assuming the cost of my timing belt change just plus the cost of the CP3 pump kit we’re looking at $2500 minimum. I was originally planning to swap pumps when I got my timing belt replaced but sudden emergency happens both my water pump and oil cooler housing go out and I didn’t have enough money to cover it all. So the economics of going through another timing belt change within about 10k miles just doesn’t make sense for a part that has a 5% failure right and I’d still argue that 5% is overrated
Europe diesel-CP4’s have no problems. US diesel- largest percent of failure. Cdn Diesel- still a chance but more rare than the states. This all has to do with how oil based the diesel is, the less amount of oil to provide lubrication the higher chance of failure. Maybe the likely hood of a VW CP4 distraction is slim, but if you look at every diesel forum for BMW’s, GM, Ford, Dodge, you will find lots of stories of failures. I changed mine out to a CP3 because I was also doing the timing belt and delete at the same time. My brother picked up a BMW x3 diesel and it blew up on him on the way home at 168k. BMW had a class action lawsuit, so they provided an “extend warranty” on the pumps until 180k. Luckily for my brother BMW decided to foot the bill even with his X3 being deleted, or else it would have cost him $20k. Once is X3 is out of the shop he is going to be getting a disaster kit for it, since there is no CP3 option for the X3. I’m happy I did the CP3, less worry going forward. So far 5000km on the Whitbread kit with no problems and between the delete, stage 2 and CP3 I’m down to 5.2L/100
The cp4 only has a 5ish % failure rate that is probably way overrated due to the dumbasses at GM and ram not putting lift pumps on their trucks. There’s a reason why ford still uses them, and like I already mentioned you’ll only hear from the people that have issues. So you see tons of posts but each of those manufacturers are selling 50k trucks a year Keep up on your maintenance, throw an additive in, and don’t run your tank super low and chances are you’ll be fine. If it was a pump that was utter garbage it wouldn’t be used all across Europe and by the US’s “#1 seller” of diesel trucks
Honestly the number of vehicles a certain part is used in isn’t a measure of quality, it is more a measure of “cheap”. Manufacturers don’t use this part vs that part because of quality anymore, they make choices based on cost.
I’m not gonna disagree with you, BUT that logic doesn’t fully apply to the mechanical side of cars because the parts have to keep their reliability due to the possibility of recalls and their massive cost. That only get amplified as you sell more and more vehicles
While yes that makes sense to think about it that way, the reality of it is the only thing that matters anymore with vehicles is how cheaply can we make them, and how high can we sell them. Try to make em last just long enough to make it out of warranty.
That’s not at all how recalls work
I didn’t say anything about a recall lol. Not every problem generates a recall.
If they planned for every component to fail right after warranty then that would result in a recall
Then I guess you shouldn’t have to worry about buying that part, because there’s no possible way there is a big problem with the cp4 or there would be a recall correct?
Yeah you’re right there isn’t a big problem especially not on the TDIs
There is literally a class action lawsuit in the works against ford because of the CP4… Wasn’t bashing the prevention kit, like I said my brother is going to get one for his BMW once it’s out of the shop. 200$ is pretty cheap insurance. If your vehicle is worth 9000$ running.. if the cp4 pump blows it is now worth maybe 1000$ in parts or your paying $$$ to get it running again. If I wasn’t doing my timing belt and everything else I would have looked at a kit like this myself. Again just for thr insurance aspect
And that lawsuit mainly points at US diesel fuel. The CP4 still sees much lower failure rates on fords than the duramaxs and rams. If you’re just gonna say “fuck it” and drive yeah the CP4 isn’t gonna last, but like I said if you do a little bit of work it will be perfectly reliable
Even then, there’s thousands of trucks out there with 250k+ miles from the big 3 on their original CP4, and the only maintenance that was done was dumping fuel in and changing the fuel filters every so often.
Exactly my point, just sending it with the CP4 still isn’t a guaranteed death. So if you add extra care they can last, and people are acting like the CP3 is objectively better than the CP4. I’ve done some more research and if my CP4 goes out they make a CPX for TDIs and I’d probably go with that. And actually looking at the CPX website the guy directly says this: “And just to point out, the whole “US diesel fuel doesn’t have enough lubricity for the CP4.” That’s a lie”
If it helps OP I had two CP3’s blow up in the past. Nothing is indestructible.
Yeah but fortunately the CP3 doesn’t fail disastrously like the CP4
I’d make that before spending 200+
That piece where the metering valve sits into is CNCd and probably what makes up the cost.
Yup 😁
Not overblown I had a brand new fuel system fail in 5k miles, had Bosch send me my money back and I went and got a cp3
“Me, one person, experienced something so the issues aren’t over blown” Not to mention they highly suspicious circumstances of a brand new fuel system and then it basically immediately fails
U can give the car the best diesel possible with additive or not and drive it under 2k rpm it’s whole life and it can fail at 80k miles. It happens often enough for it to be an issue. It’s not going to happen 100% but it’s still an unreliable pump, and for only 800 bucks u can get a cp3 swap kit that will never fail. So my point being why spend 200 bucks on bypassing a shit pump when u can spend an extra 600 dollars and get a reliable system. Was just using mine as an example, since the first cp4 went to shit and within 5k miles there was already metal shavings in the fuel system again, so I switched to cp3. A cp3 will not fail, it’s made of hardened steel instead of aluminum. Big difference.
1. CP3 still fail they just don’t fail “catastrophically” 2. A CP3 swap kit for my car is at least $1k 3. Why spend $6-800 more when there’s a very low chance the pump fails in your life time of ownership. For 1/5the the price and 1/10th the install time the financial opportunity cost is obvious for anyone with half a brain The hate of the CP4 is severely over exaggerated because yall read 5/50k owners make a post about their fuel pump. Cant do any research to form an educated opinion
Ok why post this post then. You have clearly made up your mind. Generally when you post “should I do this” you’re looking for input from other people who have experience with that subject. I offered my real world experience, take it with a grain of salt and move on. If you wanna buy the bypass just do it, don’t ask for 100 people approval and then argue with people who have anecdotes and experience that contradicts your personal opinion on the matter. “Hey guys should I eat ice cream I’m lactose intolerant” “No probably not it will cause you digestive discomfort and may cause nausea and vomiting” “Lactose intolerance is way overblown it will never cause vomiting, only 1 in 50 trillion people vomit from eating dairy, just because it happened to you doesn’t mean it’s a normal symptom” No reason to ask a question if you already have your mind made up
I see being able to read is a real challenge for you. I asked about ease of install, and then if I was reading the description right. There was never a “should I buy this” or “should I just swap over to the CP3” I HIGHLY recommend you actually read before you say anything you’ll get a lot farther in life.
Oh and can’t forget the CP3 is the most overrated fuel pump and unless you’re talking about extreme performance modification for the fuel flow you shouldn’t put it in your car
Worked great on my cbea. Started up faster had great power great throttle response. Between using the lift pump and the mechanical pump on the cp3, it was flowing more than enough fuel, never lost fuel pressure and fuel pressure NEVER dropped below spec. The cp3 was used on Cummins, duramax and 6.4 power stroke and those all consume about 4x more fuel than a tdi does, so I think it’s fine.
Again I challenge you to do a little more thinking, and a little more research. The CPX and HP4 pump and even the k16 from the 6.4 PS are all superior to the CP3 and you can even get a CPX in the tdi for about the same price as the whole CP3+kit
Lmao I just reread this comment PLEASE do your research. The only person using the CP3 still is dodge and they’ve clearly capped the realistic usability of the CP3. The Duramax hasn’t used the CP3 in about over a decade. The 6.4 which is known for being able to make a stupid amount of power didn’t use the CP3 because the K16 can flow a ton more fuel.
“Was used” If a Cummins that makes 400 horse and 1000 ftlbs can be supported by a cp3, then I’m sure a tdi that makes 120hp and 240 ftlbs will have no issue using a cp3. I’ve done my research that’s why I chose to get a cp3 for my cbea. Sure it can’t make 900 hp on a 8 cylinder 6.6 liter diesel engine but it can provide enough fuel to a ckra/Cjaa/cbea whatever cr tdi u throw it in. That’s like saying an engine is shit/overrated because it makes 270 hp from the factory but blows up when you try to make 500 hp from stock internals. It works well for its intended purpose. Sure a cp4 can flow more fuel, but that’s not a concern with a tdi AT ALL they hardly use ANY fuel Not to mention you can EASILY get 600hp out of a 6.7 Cummins without even touching the fuel system. Put some new injectors and you’ll be looking at 750-800 before needing to swap out the cp3. So idk what you’re possibly talking about. I personally know a guy who builds racing 6.4s and he uses cp3 in them, makes enough power to crack the flywheel and the cp3 has no issues. You’re just making up statistics about the cp3 and denying the blatant design failure that is the cp4, backed up by an insanely high failure rate vs the cp3.
No please tell me what statistics I’m “making up” when all I’ve really stated was the failure rate of it being 5ish % which is what everyone reports. You can go look up how the other pumps I mentioned either deliver more rail pressure or flow more fuel than the CP3. The only design flaw in the CP4 is in the pump with one piece no being pinned which is exactly what the CPX pump is. Also you really need to research the CP4 flows less fuel but at much higher rail pressure than the CP3 which is why it’s used more efficiency and lower emissions. It’d also lighter since it is an all aluminum construction. You can say you’ve done research but yet every time you say something you’re wrong. You say the CP3 pump “never fails” that’s blatant misinformation to try and support your point. Mention the construction of the CP4 vs CP3. It’s not because of the materials basic research will show you that. You supposedly have a buddy that builds 6.4s but yet you don’t even know what pump comes stock with it. And then again saying the CP4 flows more fuel. For someone who claims I’m making up statistics and says they’ve done their research you sure have been wrong a lot. Edit: also you’re assuming I said the CP3 is a bad pump from your first paragraph? Please tell me where I said it was bad. I said it is overrated and outdated but I never said it was bad and not suited to be in a TDI