Ok I'm going to do the exhaust on my car and I'm trying to think which will yield more pwr the mid pipe or a muffler change? I only want to do either or not both. I feel the catts need to come off and changing to an X pipe will make more pwr then any muffler change could. So I did some calling around and got some diff answers from diff people! Does anyone have enough dyno time on these cars to really no which makes more pwr a mid pipe change or a muffler change? Has anyone compared the diff or tried what I'm talking about? I'm thinking a catless X pipe will win over a muffler change!