OK well let me ask you this, did you use the chassis ground that is on the drivers side fender or did you use one that was right off the ECU like the signal wire? Also how do I get to the ignition wire that you used? Sorry for the questions, but I want to be absolutely sure that I get this right. When hooking up the gauge I had problems with my car. It seemed like the car was dumping a shitload of gas in and was making it stumble, it sounded like it had some very radical cams in it.