Installation Time: Less than 1 Hour
September 20, 2013
This is a great axle-back system. I originally ordered the Roush axle-backs, but thought they were too loud and obnoxious. After doing a lot of research and listening to sound clips, I chose the Borlas over the Flowmasters. The Flowmasters seemed to have that popcorn sound that I didn't like, so I chose these.
I originally had fitment issues with the Borlas. It appeared that the driver-side muffler came with damage (bent hangers, slightly bent exhaust exit). It wasn't a huge deal for me since I was able to bend the hangers back into place and adjust the exhaust exit accordingly. Additionally, after both sides were installed, the top of the passenger side muffler would hit the hanger when going over a bump on the road. After some redneck engineering, I've gotten rid of all the issues. I would recommend to Borla to provide the exhaust clamps in the future. With my 2014, my clamps are spot welded onto the exhaust (required me to bend and break them off the stock units).
The sound is exactly what I was looking for (deeper idle, deeper tone in general). These are slightly louder than stock on the highway (with the radio off on the highway, I can hear them slightly, which I like). When you put your foot into it, everyone around you is aware to stay out of the way. My favorite part about these is between shifts; you get a slight gurgle in between each of them. These are what the stock 3.7 Mustangs SHOULD sound like.
I've noticed better throttle response (I have an Airaid CAI), and although I know you're not supposed to notice much in performance, I do see a slight increase in power.
If you're looking for an axle-back system that has a good tone, isn't obnoxious, and provides performance value, I'd recommend these.