Dyno on stock pipe w/hrc end cap

[Jonas]

Anyone seen a dyno on the stock pipe with the hrc end cap against other aftermarker pipes? I would like to see if their is an aftermarket that will make more power than it- not just more noise.

[MR.BIG]

All aftermarket pipes make more horsepower then the hrc end cap and stock exhaust. I have a chm exhaust and it makes about 6hp more than the stock exhaust. It is a little bit louder than the stock system. It's about 98db the stock is about 96db but they make a quiet core for it to bring it back down to the stock sound level.

[Jonas]

Have you seen any dyno proof of this or just seat of the pants?