Quote Originally Posted by Sal-XK View Post
If you haven't adjusted your computer for larger tires you can add about 1 to 2 MPG to what the display says
I had them adjust my speedometer for the larger tires but it didnt fix anything. How would I go about changing that? I have always been confused with my gas considering I have the Jet chip and do everything I can for better gas mileage but it never does anything.