well if you ask some builders what piipes to run some will say GRR suicide pipes..and sorry to burst anyones bubble but they are the same thing as rockets. so in a sense, rockets are tried and a proven performer as well..just no1 knows them as rockets but rather as GRR suicide pipes. dyno sheet may have looked funky, but it was funky lookin for both cpi and rockets and rockets still made more power. i do agree that in most cases, they will make roughly the same amount of hp and itll prolly barely if at all be noticeable.