playing around on the dyno to see the differences in power that certain modifications would give me. I cant really remember but I think I lost 9 HP to the wheels by gutting the main cats. I have a thread that I had posted months ago on the subject but its not coming up in search. There was a big argument about it and some told me there was no way that there would be loss of power but we saw the proof on the dyno. *shrug*