I've heard mixed things on drone with flows on the '11s... I know my buddy's '06 with flows drones like crazy! I've never heard a report of any drone with Roush exhaust (plus the aggressive sound is great on the 5.0s.) That said, I'd buy Borlas... Lol

 

You want the best?Buy the best .. MAGNAFLOW

 

On my 2011 GT with BBR O/R X-Pipe, that means no cats...so the exhaust is louder, stock pipe from the X-Pipe back to the Super 44's, left the stock resonators in place, I have ZERO drone. Does my Mustang sound like a REAL American Muscle car to you?

As I said, with my setup, there is ZERO drone. When I had the stock H-Pipe with Cats still on the car, I had a muffler shop simply do a muffler delete. Car sounded AWESOME, I really LOVED the way it sounded, but had some droning at 2,000-2,500 in 6th gear at 60-68mph. Check out these videos of that setup:





Then I had the BBR O/R X-Pipe installed and without mufflers, it was WAY too loud. Droned like crazy. But the power gains with the O/R X-Pipe were significant!! So I then tried a few different things, different mufflers and couldn't get the sound I wanted without either droning or, too quiet. Finally, I sprang for the Flowmaster Super 44's and now, it's awesome. I'll do a better in car video if you wish. But this video clearly shows that in the car, windows up and A/C on, traveling at 60-65mph in 6th, there is ZERO drone. You can even give it gas in 6th at 2,000rpm and not get drone.




Like I said, just let me know if you're interested in having me make a better in car video.

 

I agree! Drone isnt bad enough to give you a nose bleed, but you didnt get FM's to be a wallflower either!

 

Roush all day. Get a lot of compliments from non gear heads that it is still loud and mean but not ignorant and annoying.

 

roush. flowmaster is awful and drones.

 

I have Roush on my 2010 GT . Love the sound ,most people like it also. Nothing but compliments !