multiple code, poor performance, log included

DriftDreamzSS · 10-15-2013, 07:50 PM

Hi all, hoping some of you may be of assistance to me, my car seems to be running poorly. The car is an 07 e92 AT with 85k running OFT stg 0 with dci only and 91 octane. Codes are 2d58, 30ff, 29dc, and a very scary 30ed. It seems perfectly fine at low rpm and mid range, and displays the poor performance at higher rpm/high load in the higher gears and seems to be severely underboosting in the higher gears. It has the newest hpfp, 1 new coil pack and 6 new plugs in the last 2k miles, no misfire codes since the coil pack and plugs. Linked below is the log, I appreciate any help or advice

http://datazap.me/u/driftdreamzss/oft-stg0-91oct

Jeff@TopGearSolutions · 10-15-2013, 08:06 PM

2D58 DME digital motor electronics, internal failure: control nominal torque?
(Not too familiar but I think you can ignore this one for now).

30FF:
Boost Leak (You will need to find the source of the leak as there is no direct culprit)

29DC Cylinder injection switch-off
EXPLANATION: Fuel related code
FIX: Normally requires fuel pump replacement

30ED Glow ignition: cylinder 1
This is usually an indication of a Lean Condition in your Air fuel ratio although according to your logs you seem to be OK.

I would clear all the codes and see which come back but you definitely have a boost leak. Start check vac lines and checking intercooler and charge pipe couplers and connections first. With your mileage and original vac lines I would replace all of those first including the ones under engine cover and to your boost solenoids.

DriftDreamzSS · 10-15-2013, 08:15 PM

Cool thanks for the tips, are these cars typically unaffected in idle quality/speed with a boost/vac leak? Ill see about getting a leak tester mounted to the hotside ic coupler to test everything downstream.

pits200 · 10-15-2013, 08:23 PM

Quote:

Originally Posted by DriftDreamzSS

Cool thanks for the tips, are these cars typically unaffected in idle quality/speed with a boost/vac leak? Ill see about getting a leak tester mounted to the hotside ic coupler to test everything downstream.

Sometimes a smaller boost leak is not detected until higher loads. And your timing seems WAY too high for running 91 octane, tune and dci only along with 155 degree IATs.

DriftDreamzSS · 10-15-2013, 11:05 PM

So I tightened the charge pipe clamp and re-seated the oem bypass valves as they had some oily residue and looked as if they could have been leaking. I took another log and it looks alot better, boost still lags behind target on tip in and stays below target on steady light throttle inputs, guess I have some more checking to do. 2nd log below:

http://www.datazap.me/u/driftdreamzss/10-15-13?1-3-4

10-15-2013, 07:50 PM	#1
DriftDreamzSS Captain 22 Rep 627 Posts Drives: e92 335i Join Date: Aug 2009 Location: Oxnard, Ca / Lafayette, LA iTrader: (2)	multiple code, poor performance, log included Hi all, hoping some of you may be of assistance to me, my car seems to be running poorly. The car is an 07 e92 AT with 85k running OFT stg 0 with dci only and 91 octane. Codes are 2d58, 30ff, 29dc, and a very scary 30ed. It seems perfectly fine at low rpm and mid range, and displays the poor performance at higher rpm/high load in the higher gears and seems to be severely underboosting in the higher gears. It has the newest hpfp, 1 new coil pack and 6 new plugs in the last 2k miles, no misfire codes since the coil pack and plugs. Linked below is the log, I appreciate any help or advice http://datazap.me/u/driftdreamzss/oft-stg0-91oct __________________ _
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10-15-2013, 08:06 PM	#2
Jeff@TopGearSolutions 3482 Rep 79,210 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	2D58 DME digital motor electronics, internal failure: control nominal torque? (Not too familiar but I think you can ignore this one for now). 30FF: Boost Leak (You will need to find the source of the leak as there is no direct culprit) 29DC Cylinder injection switch-off EXPLANATION: Fuel related code FIX: Normally requires fuel pump replacement 30ED Glow ignition: cylinder 1 This is usually an indication of a Lean Condition in your Air fuel ratio although according to your logs you seem to be OK. I would clear all the codes and see which come back but you definitely have a boost leak. Start check vac lines and checking intercooler and charge pipe couplers and connections first. With your mileage and original vac lines I would replace all of those first including the ones under engine cover and to your boost solenoids.
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10-15-2013, 08:15 PM	#3
DriftDreamzSS Captain 22 Rep 627 Posts Drives: e92 335i Join Date: Aug 2009 Location: Oxnard, Ca / Lafayette, LA iTrader: (2)	Cool thanks for the tips, are these cars typically unaffected in idle quality/speed with a boost/vac leak? Ill see about getting a leak tester mounted to the hotside ic coupler to test everything downstream. __________________ _
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10-15-2013, 11:05 PM	#5
DriftDreamzSS Captain 22 Rep 627 Posts Drives: e92 335i Join Date: Aug 2009 Location: Oxnard, Ca / Lafayette, LA iTrader: (2)	So I tightened the charge pipe clamp and re-seated the oem bypass valves as they had some oily residue and looked as if they could have been leaking. I took another log and it looks alot better, boost still lags behind target on tip in and stays below target on steady light throttle inputs, guess I have some more checking to do. 2nd log below: http://www.datazap.me/u/driftdreamzss/10-15-13?1-3-4 __________________ _
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