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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Cobb Logging V3



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      04-17-2016, 02:26 PM   #1
sparky_phantom
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Question Cobb Logging V3

I am trying to figure out my issue mainly with timing. I have a 2011 335i that is a 6 speed manual. Mods I have done: PPK Flash, ER Chargepipe, Downpipe (Catless), Golf Tee Mod, CDV.

I was running stage 1 aggressive and got my car dyno'd before the downpipe. Stock I was pushing out slightly above 300 horse and torque. However when I did stage 1 aggressive and sport my horse and torque dropped by 15 ish. This was on a dyno jet.

So my next step was to log in Cobb. Stage 1 aggressive and sport showed a good amount of corrections and TPS Req % would drop even when full throttle. The odd thing is after I got downpipe installed yesterday I put on stage 2 aggressive and my timing corrections went down. I am trying to figure out why. I have logs from before catless and when it still had cats.

No misfires per Cobb and no limb mode. Everything was done with traction control completely off and running 93 octane.

My other question would be what is difference in Boost Mean Abs, Boost Abs Post TB, and Boost (PSI). What is the number that the Cobb should be pushing for? I know these are load based cars and requested and actual load should be the same. Do you log wastegate as well? What settings do you all log?

Thank you for your help. I know it is log just trying to figure out the issue.
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boost, cobb, corrections, logging, wastegate


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