Quote Originally Posted by sleeper1500 View Post
Yep if you have a well setup exhaust cut outs just make noise.
true story. my truck lost 15 rwhp with the cut out open on the dyno and the mid range was also dog meat. You could def hear the difference with it closed and open, not just the noise but the motor wound out easier with the cutout closed. just a bunch of noise, sounds cool, but still just noise.