I think think the Roush has a deep tone. I love how it sounds when idling while stopped at a traffic light and at slower speeds. But it also has a lot of burbling. This video captures that. This was part of the first video I posted. Use headphones for best sound.

 

Tell him to go with the 13-14 Quad GT500 axleback. I think it's a little deeper than the single. Could be the quality of the videos that I've watched but they do sound deeper and a hair louder than the 11-12. I have them and they can definitely be heard in all rpm ranges and is now a little audible at cruise speeds. It drowns out some of the road noisethat was there when stock.

 

I'm in the same boat as the OP's friend, really like the Roush. They sound so good in the videos, but it is my daily driver and just a little worried about the volume

 

Another AB thread. /facepalm

 

Not saying this about the Roush axle backs for the 5.0 but on the 3.7 they are so god awful loud with a tone defining pitch to my ear drums.

 

they also apply the same on the 5.0, I've heard them.

I personally LOVE Borla,

Greatly like Corsa, GT500 ABs, and Stainless Works, Roush (Roush only on stock everything else in the exhaust, otherwise too loud)

am okay with Magnaflow, though they seem to just have a "general" sound. I've always found them a little boring, and I've had them on past cars.

hate Flowmaster on the Coyote, but more or less dislike them on any car where the muffler is way in back. Have had them on my GTO in the past, one set was in the axleback, another set was in the middle of the car, and the difference in sound was astounding.

This is just on the 5.0... My list would be very different on various LS cars.

 

The Roush is lovely for regular driving... but it just screams if you put your foot in it. That exhaust is what I miss about my Mustang.

 

GT500 resonator delete on my 2014. I raps real good when I push the fun pedal down hard.

 

I have the GT500's sitting waiting for the car....but kinda wishing I'd just got Boss side exhausts instead....and then ended up getting the GT500's later to complete the surround-sound experience.

But seriously, with the Boss side exhaust, just by changing out the baffle plates for different size holes you can choose-your-rowdy.

 

Here is a video of our exhaust system:


Best Regards,

TJ

 

Agreed. I even recall the op providing comments on exhausts before, so this is weird. All the info is available via searches, particularly on this specific topic.

 

My knowledge of exhausts is on the 3.7 because that's what I own. I have no knowledge about what exhaust system fits my buddies wants because its a 5.0 and I'm a few liters short. I figured I would turn to you 5.0 experts on this topic because you have the 5.0's. Lol! I appreciate all the feedback and passed along the suggestions to him. I believe my buddies head is spinning because this is his first mustang.

 

Startup of 2014 GT with Boss side exhaust and quad tip GT500 Axle-back mufflers

 

Here are my Kooks.

 

My personal favorite for the coyote