Amazing how the people you talk to are suddenly the most knowledgeable around. Plenty of "pro" muffler shows that I know have guys working there that couldn't bend 3.5 if their life depended on it. Unless you hear the sound and don't like it, comments by somebody else who hasn't, means just about nothing. Please explain what the ECU is going to keep track of? There is nothing keeping track of intake temp post TMIC so what exactly is gonna show.