i changed the 273 gears for 342 gears and none of the dealerships say they can change the rearend ratio in the computer for me if you know anyplace that can either around Atlanta or Pittsburgh please let me know

ken

 

What year is your car? You can always browse through the yellow pages to see if there are any local speed shops that can do a custom tune for you. Otherwise, maybe one of the mail-order tuners like madz28, pcmsforless, or fastchips can help you out.