need help with subaru with large speedometer error

i bought a 95 impreza coupe, 1.8L auto (for my girlfriend). it had stock size tires on it, but the speedo was of by about 20 mph(says 80 when doing 60). i put larger diameter tires on and it closed the gap to about 5 (says 60 when doing 55). the problem is with the smaller motor and larger tires, the car lumbers up to speed and the handling is effected(i’m not even sure if i’m getting as good of gas milage as i should). anyway, i’m looking for someplace that can recalibrate the computer for the stock size tires. or if anyone has any helpful suggestions, i’d appreciate it.

Try Buffalo Speedometer

holly shit krant made a post without telling someone to fuck off