i was riding home from work yesterday and i noticed my trip counter read 210 i know thats wrong because i always reset my set counter when i fill up. so i'm going down the road and see a speed trap look down and my speedometer reads 110 so i slow down and past the cops with the speedometer reading 90. he doesnt come after me. but once i get on the freeway i'm riding and look down at my speedometer it says 135 and i know i wasnt going that fast i look again 135 at 7.5k. so i know thats wrong. i get off the freeway and go down a regular highway with a speedlimit of 45 and my speedometer says 80-85. at like 5k. my question is has any had any problems with there speedometer being off? i know there off by anyway but a 15-25mph split i know that cant be right. oh and my mileage counter also jumped 2200 miles also. ECU problem maybe. i've got a 06 636 what yall think