bmw e46 2.2 do i need to reset the ecu after maf sensor replacement? since fixing the broken maf the car now hesitates at idle and hunts when first started. with maf unplugged symptoms go away. var was running perfectly with the broken sensor on it. the only reason i know it was bad was i broke the grille when changing the alternator on the car. for some reason only known to bmw if the maf goes down the cruise control wont work which it didnt after i broke the grille. cruise now works????????