CEL after Charge Pipe Upgrade

preitlerf30 · 09-24-2021, 05:42 PM

Hello all, I recently blew my stock charge pipe on my N55 F30 and replaced it with the VRSF aluminum charge pipe upgrade kit. I'm completely stock besides this pipe and a muffler delete. After installing, my car tries to stall out on start up and has a very rough idle, but it seems to drive fine once it's on the street. Diagnostics ran and said something like the fuel was too rich and the air flow was too high. I'm thinking this is the MAF sensor on the charge pipe. Has anyone else had this problem or know what could be throwing the CEL, stall on idle? Thanks all

Jvac · 09-24-2021, 05:58 PM

Quote:

Originally Posted by preitlerf30

Hello all, I recently blew my stock charge pipe on my N55 F30 and replaced it with the VRSF aluminum charge pipe upgrade kit. I'm completely stock besides this pipe and a muffler delete. After installing, my car tries to stall out on start up and has a very rough idle, but it seems to drive fine once it's on the street. Diagnostics ran and said something like the fuel was too rich and the air flow was too high. I'm thinking this is the MAF sensor on the charge pipe. Has anyone else had this problem or know what could be throwing the CEL, stall on idle? Thanks all

This can also be caused by a boost leak. Seeing as you just installed the charge pipe, that's probably a good bet. If the o-rings aren't seated right or any of the charge pipe ends or joints aren't snapped into place all the way, they can cause a leak

thejeremyman9 · 09-24-2021, 07:37 PM

There is no MAF sensor on the CP, there is a MAP sensor. If you are getting air mass and AFR codes its almost certainly a vacuum/boost leak. As noted above check IC-CP connection, CP-TB connection, connection/clamps on the coupler, make sure plugs are in, etc.

n55david · 09-24-2021, 09:57 PM

post a log and post the codes you're getting... but as Jeremy said, it's likely a really bad leak.

mike@x-ph.com · 09-25-2021, 09:44 AM

Double-check your install, it sounds like a leak

preitlerf30 · 09-27-2021, 04:45 PM

Thanks to everyone who replied, after giving the install another look it looks like it was a boost leak on the CP. After reconnecting it the car started up fine and is driving great. I initially assumed it was my MAP sensor because I've heard those are prone to being damaged along with the CP. MAP seems to be working fine and no CEL are being thrown. Thanks again everyone🙌

09-24-2021, 05:42 PM	#1
preitlerf30 New Member 4 Rep 25 Posts Drives: 2013 BMW 335i Sport Line Join Date: Sep 2021 Location: NC iTrader: (0)	CEL after Charge Pipe Upgrade Hello all, I recently blew my stock charge pipe on my N55 F30 and replaced it with the VRSF aluminum charge pipe upgrade kit. I'm completely stock besides this pipe and a muffler delete. After installing, my car tries to stall out on start up and has a very rough idle, but it seems to drive fine once it's on the street. Diagnostics ran and said something like the fuel was too rich and the air flow was too high. I'm thinking this is the MAF sensor on the charge pipe. Has anyone else had this problem or know what could be throwing the CEL, stall on idle? Thanks all
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09-24-2021, 07:37 PM	#3
thejeremyman9 Major General 4364 Rep 7,606 Posts Drives: 2015 BMW 335i Join Date: May 2019 Location: Cali iTrader: (0)	There is no MAF sensor on the CP, there is a MAP sensor. If you are getting air mass and AFR codes its almost certainly a vacuum/boost leak. As noted above check IC-CP connection, CP-TB connection, connection/clamps on the coupler, make sure plugs are in, etc.
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09-24-2021, 09:57 PM	#4
n55david Check out my Youtube @n55david! 1296 Rep 3,533 Posts Drives: 2017 m240i, 2015 X3 x35i Join Date: Aug 2018 Location: Michigan USA iTrader: (0) Garage List 2017 m240i xDrive [0.00] 2015 X3 x35i [0.00] 2015 335i xdrive [0.00]	post a log and post the codes you're getting... but as Jeremy said, it's likely a really bad leak. __________________ 2017 m240i xDrive 10.99@122.86mph bootmod3 stage 2+ ots 2015 335i xDrive 10.95@124.99mph w/bm3 - SOLD 2015 X3 x35i pwg 12.96 catless w/bm3 stage 2 93 ots IG: @n55david For pics and updates! Youtube: @ n55david For videos or Racing etc
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09-25-2021, 09:44 AM	#5
mike@x-ph.com BimmerPost Supporting Vendor 24191 Rep 190,805 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Double-check your install, it sounds like a leak __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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09-27-2021, 04:45 PM	#6
preitlerf30 New Member 4 Rep 25 Posts Drives: 2013 BMW 335i Sport Line Join Date: Sep 2021 Location: NC iTrader: (0)	Thanks to everyone who replied, after giving the install another look it looks like it was a boost leak on the CP. After reconnecting it the car started up fine and is driving great. I initially assumed it was my MAP sensor because I've heard those are prone to being damaged along with the CP. MAP seems to be working fine and no CEL are being thrown. Thanks again everyone🙌
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