Anyone has idea what this screw is for?, it came out recently and I just turned it back in. Asking just incase its something important related to tuning.
wazzup yall 7sifu...normaly if yall change da back box exhaust wut happend with da catalytic converter...did yall change to new one or just take it off??ist ok to take it off or just leave it there?..coz i read one...