hello everyone. i have a 03 silverado 5.3, and i want to install a duel cat-back system. only problem is everyone i know with a chevy that has had exhuast work done says they have lost power ( i have witnessed this ) from just changing the muffler to cat-back's, but none were a duel type like i want ( im worried i'll lose even more back pressure ) has anyone else had this problem, is there a right or wrong way to do it. can any one tell me what has been proven to work. any help at all would be greatly appreciated.
- posted
20 years ago