I think I saw a 7hp gain with the res delete. Interesting enough, I sold my exhaust to member SRT6-Steve and he dynoed exactly 7 hp more than I did on our baseline runs for the Dallas Eurocharged Dyno tune day.

Search for member BrianBrave's res delete thread, he has great info on what parts to buy and pictures to go along. I orderd the parts as he did and even printed his pictures to show the guys ar the muffler shop what I wanted done!