I was ready to take my new black Cobra 6's to the scrap yard as I wouldn't want to sell to another member knowing what a horrible drone sound they create….
BUT, I installed the Torq Loopz maybe a 2 hour job, and YAHATZEE awesome sounds 1,2,3,4,5,6 baffles in. The cats are the problem. I notice more power and torq
( hence the name Torq Loopz) I can tell you first hand that if you want good sounding pipes Loopz work!!