cobb stage 2+ agreesive 30FF

frank35 · 10-09-2012, 05:05 PM

I have a 335i fbo with cobb stage 2 agreessive +, and gear changes over 6000rpm, I get the fault code 30ff.
The leak must be very small because I only appears in those change gearshifts at full throttle. The pipes look good, it can be?
thanks

VNeBLOB42 · 10-09-2012, 05:11 PM

Start here, a few rows down

http://www.e90post.com/forums/showthread.php?t=756470

marv85 · 10-09-2012, 05:17 PM

+1

btw do you only get the code in higher gears (say 3rd) at high rpms?

frank35 · 10-09-2012, 05:23 PM

Quote:

Originally Posted by marv85

+1

btw do you only get the code in higher gears (say 3rd) at high rpms?

single failure in the gear change eg 3rd from 6000rpm, and 4-5th speed over 6000rpm

marv85 · 10-09-2012, 05:27 PM

so if you run in 3rd gear say from 3000rpm to 7000 would you get the code? just trying to compare to my case.

my car was having issues holding boost at high rpms. After 5000 rpms, boost delta from requested starts increasing. I would trigger a code in 3rd or 4th... since the DME has time to figure out something is wrong.

boostaholic786 · 10-09-2012, 05:27 PM

I have a buddy thats getting the exact same thing... Only at higher gear changes 3rd and 4th above 6k... trying to get it sorted out and got boost leak done and none??? Sort of in between a rock and a hard place....

marv85 · 10-09-2012, 05:31 PM

Quote:

Originally Posted by boostaholic786

I have a buddy thats getting the exact same thing... Only at higher gear changes 3rd and 4th above 6k... trying to get it sorted out and got boost leak done and none??? Sort of in between a rock and a hard place....

could be the vacuum lines from the canisters to the solenoids, or solenoids to wastegates, or lines from canisters to vacuum pump... could be a lot more stuff as well (worn wastegates)

I would first swap boost solenoids with another N54 that has no issues hitting boost targets. they were the culprit on my car.

frank35 · 10-09-2012, 05:31 PM

the failure warning appears exactly at the time of release the clutch, the gear is up, is the instantaneous appearance of the code,

if accelerated to 2000rpm to 6500rpm fund since sometimes do not see the code and other are.

frank35 · 10-09-2012, 05:33 PM

Quote:

Originally Posted by marv85

could be the vacuum lines from the canisters to the solenoids, or solenoids to wastegates, or lines from canisters to vacuum pump... could be a lot more stuff as well (worn wastegates)

I would first swap boost solenoids with another N54 that has no issues hitting boost targets. they were the culprit on my car.

my car has 20.000milles, the vacuum lines look good and I doubt that the problem is in the wastegates. I try changing the solenoids?

marv85 · 10-09-2012, 05:36 PM

Do you have any logs? may be there is a sign of a boost leak even though your symptoms don't indicate a boost leak.

Do you hit boost target throughout the range? Log requested vs actual and WGDC on banks...

frank35 · 10-09-2012, 05:49 PM

log 6 at the end of fault light appeared.

marv85 · 10-09-2012, 05:52 PM

Quote:

Originally Posted by frank35

log 6 at the end of fault light appeared.

It's a long log. Is this a third, part of 4th and then just cruising around.

around what time stamp did you get the limp you're saying?

marv85 · 10-09-2012, 05:54 PM

I take it back, it seems it is multiple pulls in one log.

frank35 · 10-09-2012, 05:57 PM

Quote:

Originally Posted by marv85

I take it back, it seems it is multiple pulls in one log.

see something strange in the log?

marv85 · 10-09-2012, 06:03 PM

well you are deviating from boost target obviously. It is similar to what I was getting in the sense that it gets worse at higher rpms. You off target by more than 2psi in some instances at high rpms. my car was off by 3-4 psi at one point...

In my case the solenoids solved the issue.

CarleeSWE · 10-09-2012, 09:01 PM

Had the exact same problem as you after a few weeks with Cobb st2+. I solved it with upgraded DV's and chargepipe.

frank35 · 10-10-2012, 04:17 AM

new logs,
in log 9, high rpm only see 1psi less, as you may see the 30ff me? and only in the gears? can not fault the cobb?

marv85 · 10-10-2012, 10:16 AM

Quote:

Originally Posted by frank35

new logs,
in log 9, high rpm only see 1psi less, as you may see the 30ff me? and only in the gears? can not fault the cobb?

A tip for future logs, limit your log to your run. As in "log", go WOT, run over "stop logging" asap. It makes going through the logs much easier

You are right worst i've seen is 1.3psi, which is completely OK. Should not even give you underboost.

did you get a limp this time??

10-09-2012, 05:05 PM	#1
frank35 Private 14 Rep 88 Posts Drives: 335I JB3 DCI Join Date: Feb 2011 Location: SF iTrader: (0)	cobb stage 2+ agreesive 30FF I have a 335i fbo with cobb stage 2 agreessive +, and gear changes over 6000rpm, I get the fault code 30ff. The leak must be very small because I only appears in those change gearshifts at full throttle. The pipes look good, it can be? thanks
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10-09-2012, 05:11 PM	#2
VNeBLOB42 Lieutenant Colonel 50 Rep 1,677 Posts Drives: 14' GMC Terrain SLT-2 Join Date: May 2011 Location: Folsom, Ca iTrader: (0) Garage List 007 335i E92 [7.66]	Start here, a few rows down http://www.e90post.com/forums/showthread.php?t=756470 __________________ SOLD:: PTF Pro eTune by Dzenno / COBB S1+ E50 Alpina B3 Flash / ETS FMIC / ER CP / CPE DCI
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10-09-2012, 05:17 PM	#3
marv85 Colonel 71 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	+1 btw do you only get the code in higher gears (say 3rd) at high rpms? __________________ '18 F80 M3 Comp 6MT - Stock '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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10-09-2012, 05:27 PM	#5
marv85 Colonel 71 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	so if you run in 3rd gear say from 3000rpm to 7000 would you get the code? just trying to compare to my case. my car was having issues holding boost at high rpms. After 5000 rpms, boost delta from requested starts increasing. I would trigger a code in 3rd or 4th... since the DME has time to figure out something is wrong. __________________ '18 F80 M3 Comp 6MT - Stock '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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10-09-2012, 05:27 PM	#6
boostaholic786 Captain 40 Rep 623 Posts Drives: E92 N54 with MHD Custom flash Join Date: Dec 2011 Location: Plano TX iTrader: (0)	I have a buddy thats getting the exact same thing... Only at higher gear changes 3rd and 4th above 6k... trying to get it sorted out and got boost leak done and none??? Sort of in between a rock and a hard place.... __________________ [SIZE="2"]Crimson Red E92 335i M-sport 6-speed with MHD custom stage 2+ flash only , 40% E85/93 mix,+ HRE P40S wheels, KW Clubsport, M3 sways,+BMW performance CF Mirrors, BMW Performance CF deck lid spoiler,+ CF interior trim, p3 vent boost gauge,+ LUX angel eyes (11.73@124mph on street tires)
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10-09-2012, 05:31 PM	#8
frank35 Private 14 Rep 88 Posts Drives: 335I JB3 DCI Join Date: Feb 2011 Location: SF iTrader: (0)	the failure warning appears exactly at the time of release the clutch, the gear is up, is the instantaneous appearance of the code, if accelerated to 2000rpm to 6500rpm fund since sometimes do not see the code and other are.
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10-09-2012, 05:36 PM	#10
marv85 Colonel 71 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	Do you have any logs? may be there is a sign of a boost leak even though your symptoms don't indicate a boost leak. Do you hit boost target throughout the range? Log requested vs actual and WGDC on banks... __________________ '18 F80 M3 Comp 6MT - Stock '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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10-09-2012, 05:54 PM	#13
marv85 Colonel 71 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	I take it back, it seems it is multiple pulls in one log. __________________ '18 F80 M3 Comp 6MT - Stock '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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10-09-2012, 06:03 PM	#15
marv85 Colonel 71 Rep 2,626 Posts Drives: '07 E92 335i MT Join Date: Jun 2010 Location: Bay Area iTrader: (7)	well you are deviating from boost target obviously. It is similar to what I was getting in the sense that it gets worse at higher rpms. You off target by more than 2psi in some instances at high rpms. my car was off by 3-4 psi at one point... In my case the solenoids solved the issue. Attached Images __________________ '18 F80 M3 Comp 6MT - Stock '07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P \| '10 E92 335i M, 6MT \| '07 E90 335i, PTF COBB E50, FBO, HFS4
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10-09-2012, 09:01 PM	#16
CarleeSWE OEM+ is the shit 34 Rep 543 Posts Drives: BMW 335ia Crimsonred Join Date: Nov 2009 Location: Sweden East iTrader: (1)	Had the exact same problem as you after a few weeks with Cobb st2+. I solved it with upgraded DV's and chargepipe. __________________ M-Tech - MFD - 9/10,5x18" BBS E28 - H&R - COBB - Supersprint - BMS - BigTom IC - Ultimate Racing www.Youtube.com/user/CarleeSWE www.Garaget.org/Carlee82
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