4th gear wot... Bam! Limp mode and codes

oshusttoley · 06-16-2013, 04:21 PM

I posted this in another forum but would like more input so thanks

I never seen these codes happen ever except first time I installed the jb4. I have 49k miles on my car and it's a 08 e90. I reset my map 5
And did a wot 4th gear,
Normally I do 3rd gear but I was already on the highway. Was this a blip or should I have something to worry about. I cleared codes and did another wot and no limp and no codes

Sparky68 · 06-16-2013, 05:12 PM

Logs?

Spun Crankhub · 06-16-2013, 06:10 PM

When was your last hpfp done?

Mike@N54Tuning.com · 06-16-2013, 06:39 PM

The JB4 interface tells you the likely cause of those codes. Did you read the image you posted?

If they stay off perhaps the JB4 has learned around them. If they come back I'd do a log and shoot it over to BMS for advice.

Mike

oshusttoley · 06-16-2013, 07:23 PM

Quote:

Originally Posted by MontegoChris

When was your last hpfp done?

Not in a couple years, it will be a paid to make my car stock to bring to dealer and hoping it won't come up again. I'm going to do 3 pulls and then
Log sometime tomorrow night

oshusttoley · 06-17-2013, 06:50 PM

here is a log of 3rd gear and then 4th gear. 3rd gear, no codes, 4th gear pull, and bam....triggered all the same codes! please help...i never had this problem before, have been using jb4 for months upon months with no issues before.

btw the file i changed to .txt, just change it back to .csv to view, thanks for any help!

Mike@N54Tuning.com · 06-17-2013, 07:51 PM

Quote:

Originally Posted by oshusttoley

here is a log of 3rd gear and then 4th gear. 3rd gear, no codes, 4th gear pull, and bam....triggered all the same codes! please help...i never had this problem before, have been using jb4 for months upon months with no issues before.

btw the file i changed to .txt, just change it back to .csv to view, thanks for any help!

Like the code says, lower your open loop until 29F2 doesn't come back. A good start is lowering it by 10 or 15.

Mike

oshusttoley · 06-18-2013, 01:07 AM

Just an update, fixed my problem with the codes. So with the new firmware I had my duty cycle set to "36" this gave me overboost which gave me great low throttle acceleration. I changed my duty cycle back to 26-28 and guess what.... No codes no limp mode on wot. And I never changed my OL from setting of "80" at first I tried 75, 70, 65 and 60
And still threw same codes and limo mode around 5k rpms.'idk why the change in setting with duty cycle resolved this, but it did by lowering it

06-16-2013, 04:21 PM	#1
oshusttoley Captain 45 Rep 676 Posts Drives: 2008 335i sedan Join Date: Mar 2012 Location: New Jersey iTrader: (0)	4th gear wot... Bam! Limp mode and codes I posted this in another forum but would like more input so thanks I never seen these codes happen ever except first time I installed the jb4. I have 49k miles on my car and it's a 08 e90. I reset my map 5 And did a wot 4th gear, Normally I do 3rd gear but I was already on the highway. Was this a blip or should I have something to worry about. I cleared codes and did another wot and no limp and no codes Attached Images __________________ // JB4 ISO // Running Meth // Full FBO // E85 user //
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06-16-2013, 05:12 PM	#2
Sparky68 Brigadier General 684 Rep 4,261 Posts Drives: 2016 M2 Alpine White Join Date: Oct 2012 Location: Cambs UK iTrader: (11) Garage List 2016 BMW M2 [0.50] 2017 BMW F30 330D [0.00] 2014 M135 [0.00] 2007 BMW 335i [0.00]	Logs? __________________ OG M2 7sp DCT Masata FMIC - Masata Boost Pipe - Cobra Catless DP - Powervalve Exhaust - Devilsown Methanol Injection BM3 Stage 2
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06-16-2013, 06:10 PM	#3
Spun Crankhub Major General 965 Rep 5,032 Posts Drives: 15 F82 SOLD Join Date: Feb 2012 Location: San Jose, CA iTrader: (63)	When was your last hpfp done?
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06-16-2013, 06:39 PM	#4
Mike@N54Tuning.com Joint Chiefs of Staff 4918 Rep 115,980 Posts Drives: 2007 335i, 2015 M3 Join Date: Dec 2008 Location: N54tuning.com iTrader: (89)	The JB4 interface tells you the likely cause of those codes. Did you read the image you posted? If they stay off perhaps the JB4 has learned around them. If they come back I'd do a log and shoot it over to BMS for advice. Mike
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06-18-2013, 01:07 AM	#8
oshusttoley Captain 45 Rep 676 Posts Drives: 2008 335i sedan Join Date: Mar 2012 Location: New Jersey iTrader: (0)	Just an update, fixed my problem with the codes. So with the new firmware I had my duty cycle set to "36" this gave me overboost which gave me great low throttle acceleration. I changed my duty cycle back to 26-28 and guess what.... No codes no limp mode on wot. And I never changed my OL from setting of "80" at first I tried 75, 70, 65 and 60 And still threw same codes and limo mode around 5k rpms.'idk why the change in setting with duty cycle resolved this, but it did by lowering it
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