[Modshack]

Originally Posted by Hagels316

Anyone that has done the fuse pull for the NPP exhaust - I know there is a sound difference, but how noticeable is it? I understand the valves are fully open all the time. Does it sound louder during lower RPMs and cruising speeds?

Louder at cruise for sure, not so much difference at lower RPM's and while accelerating. You may not like the drone of them open all the time. The stock open/close algorithm is actually pretty good.