you have to be a cmr tuner to tune with it. i have the hand held unit that plugs into the obd2 plug. you can make adjustments with it but not everything.Originally Posted by batlbrandon
 
 
				you have to be a cmr tuner to tune with it. i have the hand held unit that plugs into the obd2 plug. you can make adjustments with it but not everything.Originally Posted by batlbrandon