Quote:
Originally Posted by nukezero
22.4-23 MPG avg here on my N54 335i with Cobb Stage 1 - and I am making more boost psi than your 335is. Without the cobb tune, I get 23.7 - 24.2 mpg.
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I am getting 22 with boost at 17psi on 93 octane. What is your boost set to? Have just started to use a 40% E85 mix & expect to see a drop in mileage.