There is now a fix for reversion. a company Performance resources designed a product to eliminate it. p-res.net Works great and saves engines.

This is what Tank was talking about... Dry pipes with a little tiny dump at the top to save the flap and look wet, the rest comes out the bottom. It's loud and sounds bad-ass!

http://www.youtube.com/watch?v=t3-Bt6h_-8I

http://www.youtube.com/watch?v=b8-mWJ2ZdF8

I like the best of both worlds..... 95% dry pipes with a small weep hole at the end of the pipe to let a mist of water out so you can run switchable mufflers. When the mufflers are closed you quiet it down, when they're open it's amost like having dry exhaust! http://media.putfile.com/1st-Motor-Running