Sep 7, 2005 #2 8 84GNwith87eng Member Joined Jul 6, 2004 Messages 649 To record automobile data telling you how your car operates under idle and WOT. They are used to tune your car and make it perform like it should, also they help forwarn you to any problems such as engine detonation
To record automobile data telling you how your car operates under idle and WOT. They are used to tune your car and make it perform like it should, also they help forwarn you to any problems such as engine detonation