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Hey guys I was wondering if I were to do a gear swap, is there a way to adjust the speedometer to where it's accurate again? I was thinking of ditching my 3.55's and going for something around 3.90's or maybe even 4.10's. Also please take into consideration I have a 3.7L so if it's a programmer I'd have to use to adjust the speedometer, would it be compatible? Any info on this subject is greatly appretiated, thanks.