Just had the Aero Stealth 3" I/O muffler installed yesterday and dumped under the bed. Sounded really good, but had some drone to it. The shop that installed it was nice enough to line everything up in case I wanted to reinstall the tailpipe with the resonator. I did that today, and no drone whatsoever. I can still kinda tell when MDS kicks in, but it's not obnoxious like my bosses Slowmaster. All this for $110.00 otd. Next to the trueflow intake, best mod yet!

 

Sooooo a little bit more quiet than your dynomax? Before or after you put resonator back in?

 

before i put the resonator back in, it was mellower than the dynomax, but the dyno was a si/do with dual pipes out the *** end. I've been told that he dual pipes make it a lot louder than a single exit in the stock locaton.

 

Interesting. I just bought an Aero Stealth 200; hope to install it this weekend. Currently have a Magnaflow, but the in-cab drone at 1900 rpm is rather annoying. If the Aero isn't any quieter, guess I'll reposition the muffler further back and see if that helps...
I'll try to remember to post my review once I've driven it around a bit