how bad did your MPG go down since 3.9 FD install
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Joined: Feb 2004
Posts: 675
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From: Wichita, KS
I dropped about 3-4 mpg after install over a year ago.......that's an overall drop with both highway & city driving over a week or so time. Of course, I keep my foot in the throttle a lot - ha! 
Last edited by Z CRUZN; May 15, 2006 at 05:16 AM.
my difference is i dont regular drive anymore!!!
you will see probably 2-3 mpg loss at most, i drive my Z harder and more spiritedly now i have the FD, its a better car, cant wait for FI then ill drive slow again!
you will see probably 2-3 mpg loss at most, i drive my Z harder and more spiritedly now i have the FD, its a better car, cant wait for FI then ill drive slow again!
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