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      12-03-2013, 08:19 PM   #1
DaMaN841
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CP-E Charge Pipe Blowing Off

Hey Folks,

Recently invested in a slew of CP-E parts that were professionally installed on my 135i. Exhaust, Midpipes, Downpipes, FMIC, Oil Cooler Addon, Intakes and their Charge Pipe w/ Tial BOV to go with the JB4 piggyback.

Unfortunately, the CP-E Charge Pipe has blown off three times now. The first time I figured it was a fluke, so it let it go. The second time, I braked relatively hard; this shouldn't happen, however, I let it go once again. Unfortunately, this third time, it was while accelerating and I've had enough. The CP-E Charge Pipe utilizes the stock locking mechanism, which I believe is the root of the problem. I'm really at a loss here, with a side of frustration.

With all of that said, the next thing on my mind is investing in the Stett N54 Chargepipe. It seems to have a much better connection to the throttle body, with perhaps some necessary give. Thoughts on this? What are my other options?

As a note, I'm running Map 5, which can reach up to 17 PSI. Also, each time it fell off, it was professionally reinstalled. Simply making sure everyone knows it's not my grubby paws doing the install. Thanks in advance.
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Last edited by DaMaN841; 12-03-2013 at 08:49 PM. Reason: Adverbs!
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      12-03-2013, 08:35 PM   #2
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Exactly where is it blowing off? At the throttle body? Somewhere between the IC and charge pipe? At the blow off valve? Which stock "locking" mechanism? What do you mean "braked relatively hard" and what does braking have to do with the charge pipe popping off?

Have you tried contacting CP-e?

Just because someone takes your money to install something for you doesn't necessarily mean they know what they're doing. The tuning industry is full of wannabes.

If you're talking about the throttle body, it is possible the big C-spring piece has been damaged, rounded off, so it isn't catching correctly. The stock lock is a pretty good design, and most aftermarket charge pipes use it. I'd much rather have that lock that a typical silicon hose with two t-bolt clamps as that counts on a normal friction force and no real latch in the direction of pressure.

It's also possible the CP-E pipe is not machined correctly at the lockign mechanism, and you should just try calling them to see if they can help.
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Last edited by Freon; 12-03-2013 at 08:41 PM.
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      12-03-2013, 08:41 PM   #3
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It's blowing off at the throttle body. The locking mechanism I am referring to is the C Clip.

I have contacted them with regards to this and they claim they have never had someone return a charge pipe. Unfortunately that is where that conversation ended.
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      12-03-2013, 10:05 PM   #4
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Quote:
Originally Posted by DaMaN841 View Post
It's blowing off at the throttle body. The locking mechanism I am referring to is the C Clip.

I have contacted them with regards to this and they claim they have never had someone return a charge pipe. Unfortunately that is where that conversation ended.
I also have the cp-e charge pipe
It was professionally installed by my two hands and doesn't pop off at 17psi
you may want to invest in a new o-ring where the pipe slides on to the TB
I also lightly greased mine when installing
The c-clip can also be installed incorrectly thus allowing the pipe to come off

I'd be curious to see an installed pic of the OP's pipe installation
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      12-03-2013, 10:06 PM   #5
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Wire spring clip at TB is installed the wrong way around
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      12-04-2013, 05:31 AM   #6
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Something is wrong. The er chargepipe uses the same clip and its probably the most popular one. Mine has stayed on since day one and a co-worker has the cpe and his also doesnt come off (17.5 psi)
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      12-04-2013, 10:30 AM   #7
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Mine has blown off twice in the 5 months I have owned it. Both under high boost. IMO it's a poor design and reusing the C clip is a corner that shouldn't be cut. However, after I tightened the C clip with my bare hands I haven't had the problem again. Also a huge inconvenience that the C clip is only sold with the whole Charge pipe, and BMW won't sell it individually. Welcome to the wonderful world of aftermarket parts.
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      12-04-2013, 12:11 PM   #8
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Would someone mind posting a photo of their installation?
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      12-04-2013, 07:23 PM   #9
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Wow, when the C-clip hooks into mine, I don't really see how it would or could pop off. The C-clip would seem much more secure to me than the aftermarket clamps like Stett uses. However, if my C-clip pipe kept popping off, I guess I would try one that connects differently.
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      12-04-2013, 10:47 PM   #10
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I felt the same way. Perhaps it's damaged or the connection on the other side from the Intercooler is simply tighter, such that the weaker side gives, and since the c clip connection doesn't offer any give, it disconnects. Simply speculating. I just want it to be secure.

If I never have to deal with it again, I'd be a very happy camper.
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      12-04-2013, 11:11 PM   #11
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You are either missing the rubber o-ring or the wire c-clip is not secured or the incorrect way around. Post a photo so we can see the TB connection.
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      12-05-2013, 10:58 AM   #12
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pic if er charge pipe

Here is a pic of my er charge pipe. Hope it helps.

Running cobb stage 2+ and it has never popped off.
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      12-05-2013, 11:58 AM   #13
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ER is definitely the best around.

As suggested, check that it is installed correctly and the clip is in place. O-ring should be checked to make sure it is not broken or anything. If it is not there, you'd get underboost codes.
Also clean the interior of the pipe, where it envelops the throttle body.

if that doesn't help. sell it and buy ER.
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      12-05-2013, 01:46 PM   #14
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Quote:
Originally Posted by marc@x-ph.com View Post
ER is definitely the best around.

As suggested, check that it is installed correctly and the clip is in place. O-ring should be checked to make sure it is not broken or anything. If it is not there, you'd get underboost codes.
Also clean the interior of the pipe, where it envelops the throttle body.

if that doesn't help. sell it and buy ER.
I'd challenge that
The fitment of my cp-e is perfect and the appearance is 10x better than the ER
The black version is good but my highly polished cp-e pipe with red Tial looks pretty cool!
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      12-06-2013, 09:24 AM   #15
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Currently it is disconnected, however, this is what it looks like. Seems like the second photo is a bit fuzzy. I apologize; didn't realize it until I uploaded it.



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      12-06-2013, 10:42 AM   #16
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Like said above, your clip is backwards. The little tab on the bottom of each leg of the clip should be pointing away from the throttle body. This allows the clip to fully lock down into the groove on the TB. Pull that clip off, rotate it 180* and put it right back in.
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      12-06-2013, 12:51 PM   #17
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Quote:
Originally Posted by b1aze View Post
Like said above, your clip is backwards. The little tab on the bottom of each leg of the clip should be pointing away from the throttle body. This allows the clip to fully lock down into the groove on the TB. Pull that clip off, rotate it 180* and put it right back in.
+1 clip feet are facing the wrong way
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      12-06-2013, 01:18 PM   #18
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Quote:
Originally Posted by b1aze View Post
Like said above, your clip is backwards. The little tab on the bottom of each leg of the clip should be pointing away from the throttle body. This allows the clip to fully lock down into the groove on the TB. Pull that clip off, rotate it 180* and put it right back in.
+1000
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      12-06-2013, 01:19 PM   #19
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Quote:
Originally Posted by ___whoosh___ View Post
I'd challenge that
The fitment of my cp-e is perfect and the appearance is 10x better than the ER
The black version is good but my highly polished cp-e pipe with red Tial looks pretty cool!
I wasn't referring to how it looks at all, that is pretty subjective
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      12-06-2013, 01:32 PM   #20
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Thank you everyone. I'll do exactly that. I'm pretty furious with the installers. Sigh.
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      12-06-2013, 01:40 PM   #21
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Quote:
Originally Posted by marc@x-ph.com View Post
I wasn't referring to how it looks at all, that is pretty subjective
oh my mistake
please enlighten me how the ER can be the best.
I'm anxiously awaiting to hear how a pipe with 1 factory connection at the TB and a silicone coupler on the opposite end can be so much better than another without taking any visual features into account

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      12-06-2013, 02:00 PM   #22
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Quote:
Originally Posted by DaMaN841 View Post
Thank you everyone. I'll do exactly that. I'm pretty furious with the installers. Sigh.
I had a feeling about this after the number of times you stressed "professional install", the people who do that are always the ones who get fleeced.
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