Originally posted by Rockonp04
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I found the extra power mostly in the timing table. BMW pulled a lot of timing at MBT and that's why you see the dip on most HP graphs for Spec 30 dyno plots (or stock dyno pulls) around 4700rpm. That being said, the race car's tune only required a max of 6% (~12-18bits) additional fuel in MBT, but that was also in part due to the added timing in MBT. I have read many companies chips, and most of them just smooth out that timing curve and touch nothing else! MarkD (EAT), NickG, real JimC and Sssquid are the only commercial chips I have read that actually went through everything.
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