i installed the corsa 14270 rear exit sport last night and finally got to drive my truck today. whenever i buy another truck the only exhaust i will buy is corsa. when i looked into the muffler and saw just a stright through pipe i thought it would be loud. nope, not at idle, if you want to hear it you have to punch it. i have found myself hoping the light will turn red just so i can go wot again. thats not including the horsepower going from the blowmaster catback i trashed to the corsa. it feels like everytime i punch it im getting more power. might be the computer relearning. this is an awesome exhaust, but thats just my 2 cents.

 

You have to see a cut away to really know how that muff works. There is an um-teen amount of baffles and channels in there. Ditch your cats, it will sound alot better!!