try reflash it!!!! ← Thanks Nick, I'll try it and let you know. By the way, If I put a 3.5" dump pipe with a metal cat into a twin 2.5" cat back system, what effects would it have on your tune. I have already added the cat back twin 2.5" system and there does not appear to have any adveres effects! ← Yeah mine still revs up hard at the start when cold. The TC switches off only when things get hectic and there is a consistant loss of traction under heavy work condition other than that all is well. Daryl why dont you change the cooler on your car first. It makes the car run better with the standard muffler, and its not an expensive mod. How much is the cat baack 2.5"? does it sound different? MG ← Well, I see I'm not alone with these problems. I think I'll go see Dynowog today & see if he's found a fix yet. Other than the cold start issue, I'm quite happy with the resulsts (270+rwkw) & you could even say...The results speak for them selves!