OK, so I finished my install last night. Car ran rough for about 30 seconds and then smoothed out, nice whistling sound and I'm thinking everything is good. About 2 minutes later after nervously took it to 2500 a couple times, it starts running rough and the wrench light comes on. I assumed a check engine light from not having cats and the canned tune not accounting for them. I also installed Steeda delete platesand GT500 fuel pumps but didnt think they would throw the wrench light. What exactly does the wrench light mean? Enlighten me. I'm about to call the dyno-shop I will be going to on Saturday.