Quote:
Originally Posted by Hilltopper
I run a Billy Boat Cat Back NPP setup and love the sound. Deep old school muscle car tone, not raspy and retains NPP. Fit and finish are excellent. Real nice sounding system.
|
Does your NPP make any difference open/closed? I have BBE, and the valve design is amazing, but it doesn’t make any sound difference. The disc/flap part of the valve is too small of diameter and doesn’t seal the exhaust when it’s closed.