Originally Posted by Quicksilvers

If you change anything in your exhaust it will be louder. If you install a muffler delete your Z will be louder and have more volume as well. You can pick up some power by installing an exhaust but you have to make the sacrifice that your exhaust note will change. I have seen people get any where between 5-8 whp on the dyno from a muffler delete it depends. I think the best muffler delete for our cars is the AAM Competition short tail exhaust (muffler delete).