Quote Originally Posted by RallyDude View Post
Yeah, I thought that Butterfly could be an interesting idea, never heard of that before, and for a hundred bucks, I'll give it a try along with the SuperTrapp tip unless anyone else has a better idea. I'm a little weary how long that spring will continue to function. Any one have warranty experience with Dynamax? I know back in the day, we honored warranties on the Walkers.

Oh, and the missing thread that I failed to post, rating Dynamax, Thrush, and Walker is:
http://www.dynomax.com/soundsofdynomax.php
It allows you to hear exhaust, and if you compare it to the Walker, you can hear the difference from stock.
Agreed on the valve concern, but they have a 90 day "performance" warranty plus a lifetime warranty. I am curious what the difference between the two is.