A little behind in the conversation... Does the 4" drone at all?

I put a stock Duramax catback on and surprisingly, it doesn't drone at all...and its dumped after the axle. I'm just not fully happy with the sound. I like the quiet, but there's some rasp in it.

theres a teeny tiny bit of rasp in the upper-mid RPM range, but its barely noticeable. the 4" does drone some even with it ran all the way out the back. but it sounds too badass to mess with :D I've been asked countless times how I got a BBC in the truck LOL... VERY deep and throaty and absoltely screams in boost or at WOT...

a few guys have heard it in person and from in the truck, they can give a little more unbiased report on it.... lets just say that STS kits arent the only way to hear the turbo ;)