Quote:
Originally Posted by Marscommander
Hello all,
I successfully completed the si conversion using the bimmerlabs tune a few months back and thought I'd ask about fuel economy. Not really talking about in-town since I do drive pretty spirited, but I noticed I'm missing a few mpg out on the highway at cruise. Used to get 32-34 and now get around 29 peak. Combined has dropped by about 5 as well.
Car is running great and pulls strong, no errors or dirty filter or anything like that, just wondering if the tune is less efficient. Noticing it with gas prices lately :P
Thanks!
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After driving for a few more weeks have you noticed any improvement in your fuel mileage?