first built f23
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Senior Member
Joined: Jul 2003
Posts: 538
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Yeah, MPG already went down dramatically. Im guessings its because of the heavier parts in the engine, and that the car isnt tuned to the parts. Im getting about 360-380 a fill up, before the build i was getting 420-440 a fill up.
I missed Sean
Joined: Aug 2004
Posts: 11,285
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From: Fairfield/Bridgeport CT
it's probably because you are making more power and using more fuel, after you tune it you probably wont see numbers nearly as good as before