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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 > Please help with analyzing a data log



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      08-26-2014, 07:43 AM   #1
tke344
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Please help with analyzing a data log

I know this is the n54 section but it seems like nobody in the n55 section does any custom tuning, this board just has a lot more enthusiasts.

http://www.datazap.me/u/tke344/e40-r...18-19-20-21-22

The beginning is a little odd in that my timing is very low, nowhere near what my table says and there's a pretty good gap between load target and actual load. I feel like it has to do with my WGDC spool table? Seems like peak boost is coming in a late. I raised the values in red a few points.

Name:  wgdcspool.JPG
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I also have a drop in timing at 5100-5300rpm that I can't really explain. I'm not seeing a timing correction but it just drops off. The only thing I can correlate is that it's the same time my boost peaks.
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      08-26-2014, 09:24 AM   #2
tke344
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I think I might just switch to "commanded" WDGC - There are so many factors otherwise it's overly confusing.
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