Thread: E30 Cobb Log
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      11-17-2012, 02:17 AM   #3
EastCoast335i's Avatar

Drives: 2015 X5 | 2008 335i
Join Date: Sep 2007
Location: NJ

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Originally Posted by Ænema View Post
First things first: Did you completely disable traction control when you took the log? I ask because you were having fairly severe throttle closures and overboosts. I'm not 100% sure if the overboosts were causing the throttle closures or if the throttle closures were causing the overboosts. Based on the data it loos like it's the first. Do a seach and you'll find a couple threads that discuss how to correct the overboosts using ATR.

Now about those timing corrections: You're 100% correct in your assesment. The corrections weren't severe so to correct that just run a slightly higher ethanol mix. Just keep increasing the mix until the corrections go away. Add STFT and LTFT to your logging list and make sure they aren't maxxing out at 34%. If they do then you'll have to increase the fuel scalar value in ATR.
traction control was completely disabled.
what line# in the excel spreadsheet are you seeing throttle closure?
I'm not sure what to look for?
keep in mind i am 6mt, the only time there should be closure is when i shifted gears from 3rd to 4th. the rest of the run was done WOT, foot pinned to the ground.