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      07-25-2018, 11:45 AM   #63
berns
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Drives: '07 E90 335i
Join Date: Feb 2013
Location: Los Angeles, CA

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Quote:
Originally Posted by bbnks2 View Post
Last track day I noticed power loss too. I checked logs later and say 170f+ IATs. DME table is set to reduce timing pretty aggressively at that point. You will feel a several degree timing difference easily.

Post shift bog could also be some of the issue. If rpms rise while switching UP gears (you didn't lift all the way off the gas) then requested torque flat-lines post shift. A tuning solution is supposedly in the works for that specific shift bog. With a lightweight flywheel I find this happens very frequently/easily when I try to shift fast.
I'd be really curious to know IATs of an NA car, like an E46 or E92, by comparison. Doubly curious of a properly built single, pushing 450-500hp on a road course. My guess is heat management would be a lot easier.
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