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M2 Technical Topics > N55 Engine / Drivetrain / Exhaust / Bolt-ons / Tuning > check your charge pipe

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      05-09-2018, 01:59 PM   #1
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Exclamation check your charge pipe

add me to the list of people who have cracked their charge pipe, my only mods are sport cat and MPE ..i dont track my car and i dont even drive it that hard so i recommend everyone check their pipe regularly or go aftermarket

the reason i am posting is to point out that the crack in mine was so minor so its very possible someone out there is driving with theirs cracked as well, the symptoms of my car were slight lack of power along with a muffled sound when reving car at a stand still, i kept checking this pipe for cracks and could not find anything until i put my phone on the underside and took a video, there seems to be a horrible connecting seam on the pipe where it is prone to cracking

the muffled sound was driving me nuts...so yeah take a look at yours today! yeah i know i sound like a doctor demanding people to do check ups
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      05-09-2018, 03:58 PM   #2
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Did you get yours replaced under warranty? What did they say? I'm not an expert, but I'm not sure how the downpipe would cause this to happen. You say it was your only mod. Reason I'm exploring this idea is because maybe it might be an option for someone to continually get a new chargepipe replaced under warranty and then shell out the $$ for an aftermarket CP after warranty is up. Might be an option for someone strapped on cash and would rather spend the money on other mods.
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      05-09-2018, 04:06 PM   #3
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Quote:
Originally Posted by Anthony1s View Post
Did you get yours replaced under warranty? What did they say? I'm not an expert, but I'm not sure how the downpipe would cause this to happen. You say it was your only mod. Reason I'm exploring this idea is because maybe it might be an option for someone to continually get a new chargepipe replaced under warranty and then shell out the $$ for an aftermarket CP after warranty is up. Might be an option for someone strapped on cash and would rather spend the money on other mods.
im sure a dealer that is not an ass would replace it under warranty but i didnt even bother taking it there... i just ordered an aftermarket one, VRSF is about $200 so its not that bad, id rather not have this happen again
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      05-09-2018, 04:53 PM   #4
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I had the same problem and the dealer replaced under warranty yesterday.
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      05-09-2018, 05:29 PM   #5
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Soon getting FTP. But kinda curious if mine has any cracks also.
Will check once I am back home from work today.

Thank you for your kindness letting everyone aware
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      05-09-2018, 09:46 PM   #6
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At what part of the charge pipe is that crack and whats the easiest way to get to it? Hard to tell zoomed in.
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      05-10-2018, 08:46 AM   #7
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Quote:
Originally Posted by PackPride85 View Post
At what part of the charge pipe is that crack and whats the easiest way to get to it? Hard to tell zoomed in.
when looking in the engine bay from the top..its near the top part of the pipe where it connects to the throttle body (i think thats what its called) you will see a seam on the pipe that goes around and it looks rough, this part cracked and it cracked on the underside that is not visible from looking from the top..its very hard to see
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      05-10-2018, 10:18 AM   #8
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Wouldnt air escaping from a crack in the charge pipe normally trigger a CEL?
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      05-10-2018, 11:06 AM   #9
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Quote:
Originally Posted by boostm3 View Post
Wouldnt air escaping from a crack in the charge pipe normally trigger a CEL?
probably depends on the amount of air escaping, that's basically the point of my thread just want to make others aware that the crack will probably start small and then it will eventually get bigger and then possible break open, this is something that BMW should put a TSB out for

also if you think you are good because you are stock thats a false sense of security imo..
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      05-10-2018, 08:15 PM   #10
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Quote:
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Wouldnt air escaping from a crack in the charge pipe normally trigger a CEL?
A good way to test for this is to monitor LTFT (long term fuel trim). If the MAF is metering a certain amount of air, and some of it is leaking down line, the ECU will need to compensate by removing fuel since you'll be running rich. The LTFT will have a very large percentage increase, and if high enough could throw a CEL.

At least thats how it worked on my Mazda. Normal LTFT's on that car were +/-5%. Anything above 10% usually meant small leak. 20% or higher meant significant leak (usually shitty clamp job when changing intake, IC, etc...).
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      05-10-2018, 10:56 PM   #11
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Already replaced both Charge and Boost pipe with FTP. Ordered and the box was on my doorstep 2 days later! Good quality and fit. Those that are really picky should get different/better quality clamps.
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      09-01-2019, 04:14 PM   #12
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Well mine just popped off from the intake manifold.
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      09-03-2019, 01:47 PM   #13
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Well mine just popped off from the intake manifold.
Are you stock?
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      09-03-2019, 11:09 PM   #14
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Glad I replaced mine when I swapped intercoolers.
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      09-04-2019, 05:55 AM   #15
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      09-04-2019, 09:36 AM   #16
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Are you stock?
No. Catless DP and Hex Stage 2 tune.
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