Originally Posted by Futwa
My car was originally a 3.31 gear m6 and I got about 18mpg in the city and 22-23 on the highway at mostly 80mph. I got my 3.73's put in today so I'll see what it does to my mpg, I've also got 20 inch wheels and I think my total tire height ends up being around 26 inches.
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22-23 @ 80 with 3.31s? Damn, do you stay in 5th gear at 80 MPH or something? I can get 25.5-26 @ 80 with 3.55s.