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      12-02-2007, 02:41 AM   #13
shiv@vishnu
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Drives: X1, 335i
Join Date: Sep 2006
Location: SF Bay, CA

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Quote:
Originally Posted by jtmccabe View Post
I think the problem is that the SAE correction does not take into account the FI engine's altitude compensation. It just applies a straight ~25% altitude correction, as if the turbos aren't producing more boost to compensate for the high altitude.
+1 At 5000' above sea level a 335i may only loose 10-15%, not the 25% that a naturally aspirated car would loose.

Shiv