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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Glow Ignition (superknock) Codes Driving me Crazy!



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      10-19-2014, 10:05 PM   #1
tdgesq
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Glow Ignition (superknock) Codes Driving me Crazy!

So I'm only running Cobb's Stage 1 Sport Tune, and I keep getting these glow ignition codes:

30F0
30EE
30F1

I'm running 93 octane, so I don't get why this keeps happening. It's pretty scary when it does, because the entire car shudders and stalls out. It's making my tune pretty much worthless since I'm afraid to go wot. Any thoughts?
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      10-19-2014, 10:18 PM   #2
AWTT335i
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Quote:
Originally Posted by tdgesq
So I'm only running Cobb's Stage 1 Sport Tune, and I keep getting these glow ignition codes:

30F0
30EE
30F1

I'm running 93 octane, so I don't get why this keeps happening. It's pretty scary when it does, because the entire car shudders and stalls out. It's making my tune pretty much worthless since I'm afraid to go wot. Any thoughts?
Flash the car to stage 0 map and get some logs. Something is off and you'll want to correct it before running anything more aggressive and potentially damaging your engine.
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      10-19-2014, 10:48 PM   #3
tdgesq
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Thanks. Can't do it this week but will do on the weekend in third gear wot uphill.
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      10-20-2014, 12:48 AM   #4
Orb
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Quote:
Originally Posted by tdgesq View Post
So I'm only running Cobb's Stage 1 Sport Tune, and I keep getting these glow ignition codes:

30F0
30EE
30F1

I'm running 93 octane, so I don't get why this keeps happening. It's pretty scary when it does, because the entire car shudders and stalls out. It's making my tune pretty much worthless since I'm afraid to go wot. Any thoughts?
Log your LTFT and STFT for both banks and both fuel pump. Drive normally for 10 minutes with some part WOT, and constant speed at 1500, 2500 rpm and idle. Had the same issue and it is was not easy to solve in my case
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      10-20-2014, 02:56 PM   #5
tdgesq
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Will do, but I'm not sure what LTFT and STFT mean (linear and stock throttle maps)?

Now that you mention it, I do have an older historical code H2AAF that I believe is fuel pump plausibility. It's only thrown it once and hasn't come back again. Thanks for helping me sort this out.
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      10-20-2014, 02:58 PM   #6
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Quote:
Originally Posted by tdgesq View Post
Will do, but I'm not sure what LTFT and STFT mean (linear and stock throttle maps)?

Now that you mention it, I do have an older historical code H2AAF that I believe is fuel pump plausibility. It's only thrown it once and hasn't come back again. Thanks for helping me sort this out.
long or short term fuel trim
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      10-21-2014, 12:04 PM   #7
Orb
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Quote:
Originally Posted by tdgesq View Post
Will do, but I'm not sure what LTFT and STFT mean (linear and stock throttle maps)?

Now that you mention it, I do have an older historical code H2AAF that I believe is fuel pump plausibility. It's only thrown it once and hasn't come back again. Thanks for helping me sort this out.
The pump code is parent code an is some what followed by a code related to the real issue. Once fuel trims go out of wacky you will throw a 2AAf code as I did but it false code in my case. You need to disable some logging function so would de select timing corrections as you max out at 22 channels. No need to log timing corrections when you have an issue with you already know about.

Log these for sure

LTFT (Bank 1)
LTFT (Bank 2)
STFT (Bank 1)
STFT (Bank 2)
Fuel HPFP
Fuel LPFP
Lambda (Bank1)
Lambda (Bank2)
ECT (engine coolant temperature) - optional but do it in an extra log - should about 95 - 105 C

Post your log to get help...someone will see the issue if there is one.

Last edited by Orb; 10-21-2014 at 04:12 PM..
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      11-08-2014, 05:49 PM   #8
tdgesq
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Logs - finally

This is my first time logging, so it took some time to figure out what I was doing. The first log is of the fuel specific parameters and the coolant temperature as was recommended. There was a state cop hanging around on the stretch of highway I was driving, so I could only open it up a couple of times: around time 70 and 270.

The second log has the default categories, like the timing correction data. If anybody can give me a hint as to why I keep getting the glow ignition codes, I would appreciate it!

https://www.dropbox.com/s/l2kuo3r2xn...alog1.csv?dl=0

https://www.dropbox.com/s/7jeky3mgrc...alog6.csv?dl=0
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