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      03-12-2011, 08:18 PM   #6
BimmerPost Supporting Vendor

Drives: 2007 335i, 2015 M3
Join Date: Dec 2008

iTrader: (89)

Originally Posted by enrita View Post
great sum up man and i can just tell you that you would get better results with a tune providing 3 degrees CPS offsetting especially with the gas your are running and altitude.
That ignition curve really sucks ...
He can plug the BMS CPS module in soon and offset as much as he wants. Based on other 91 octane testing I've seen he will need to offset around 7 degrees to eliminate the drops and then will need to increase boost from 11psi to 13-14psi just to break even again on power. What he really needs is higher octane. A richer AFR will also help. High elevation + poor gas + all wheel drive does not make for great tuning potential.


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