2016 GT catback exhaust (Gibson & Borla)
So I ordered my Mustang in April, and started collecting all the parts that I wanted to swap out. I chose the Gibson three inch cat-back, and I have to admit, after driving my car home from the dealer, I was a little worried; it sounded great in its stock form.
Two weeks ago I installed the exhaust, and I felt like the cold start was a little loud, but it quiets down when warmed up. The Gibson sounds great throughout the rpm range. You will get a little bit of raspiness on the high end, but it's not too bad. I took my wife for a drive on PCH last weekend, and she loved the sound, didn't mind the volume, but hated the drone between 60-70 mph in 6th.
Since we take a lot of road trips, I knew I needed to fix this. I went to a local exhaust shop, and the guy told me he would suggest making a 2 1/2 inch X-pipe with Magnaflow resonators. He claimed that the drone is associated with the three inch pipes.
Since I don't want a pieced together system, I decided to swap to the Borla S-type. The Borla is a lot quieter, and doesn't sound as good as the Gibson in my opinion; it's more raspy, and earlier in the rpm range. The Borla also lacks the deep bass sound of the Gibson, and produces no drone thus far.
Whether it's the 2 1/2 inch piping, or built in resonators, the Borla has no drone, and better manners. When getting on it, it gets loud, louder than the Gibson on the high end of the rpm range. Lastly, the build quality and packaging of the Borla is much better than the Gibson.
In short, the Gibson sounds better and had less rasp. The build quality is fine, but it's not as good as the Borla. The Borla is quieter when driving easy, but louder at the top end. The drone of the Gibson wasn't too bad to me, but if you are sensitive to drone, you won't like it. No drone with the Borla, and quieter cold start if you are concerned about the neighbors.
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2016 Mustang GT