[Dan in Pasadena]

Thanks,
Mike is strongly advising me not to use a chambered muffler. He puts every car/truck he builds on the dyno and has found as much as 61hp at the wheels using a straight through muffler vs. a chambered muffler! That test was on a mildly cammed LS1. I'm going to follow his advise and most likely use the Dynomax in a long length, 22' or 23" - I want it to sound good but not over-the-top loud. That's sounds cool when you build it and gets annoying after awhile, I think. YMMV.