i have a 08.5 speed 3 and my rpm gauge was stuck so i tapped the face with a screw driver, well... the needle cam unstuck but i cracked the plastic face over the gauge in the process. so i ned to get a new cluster but i was wondering when i swap it out, does the milage stay with the cluster? or when i put the new one in will it automatically set to the previous milage on my cluster before?