Thanks for the info guys, i'll check into those. It was the main dude at Hogan performance. He seemed pretty knowledgeable about the 3800 and the computer systems. So the cat test I was afraid of does indeed happen on the older models? I've also read the 02 simulators don't work on the newer models, but was going to try and remove the code with HPTuners later on. Anyways, it's coming in today woohoo, can't wait to get the car back.