Ford Performance By Borla Cat-Back Exhaust System 2-1/2" Sport Stainless Steel With 4" Chrome Tips GT 2015-2017

Throughout its 50-year history one of the first modifications many Mustang owners didn't really buy their car is change the exhaust system. The 2015 is no different. The exhaust isn't bad from the factory but it has a very mellow sound and would definitely benefit from something a little more aggressive. Today we remove our factory exhaust system and replace it by this Ford Racing by Borla Sport Cat-Back.

Ford Racing team bi-blower produced this stainless steel Cat-Back bolt-on exhaust system fitting your 2015 Mustang. It starts with a true x-pipe, mandrel bent tail pipes, and a set of blower mufflers, and a set of polished four-and-a-half-inch Ford Racing tips. This is a direct bolt-on for your 2015 Mustang; requires no cutting for installation.

Before beginning installation we do some sound clips to the factory exhaust so you have a baseline to go off of. Again not terrible-sounding for a factory system but we definitely can do better.

For this installation we're going to need lift or Jack and Jack stands, 3/8 ratchet, 13mm deep socket, 15mm deep socket six-inch extension and safety glasses.

We'll start by giving you a quick overview of the factory exhaust system for our 2015 Mustang. It's similar in some ways but it's a lot different than previous models. The catalytics converters probably look similar. On the passenger side it does bolt on. The driver's side the catalytic converter is actually part of the exhaust header like for a very new combination if we're trying to go for an off-road pipe. It goes back for a normal pipe here into this large; we'll call it resonator or muffler whatever you want to call it. It's massive, it's probably heavy, and it definitely is restricting the sound as well as the flow of our exhaust system.

After that it comes back to the tail pipes which look very different on this car because it's independent rear suspension. The old pipes would go over the axle. With the IRF they're going to go underneath into a set of Ford, we'll call it a typical Ford muffler. It looks like a very similar muffler that's used on the previous models. This system is heavy, it doesn't flow all that well, and like we said it doesn't sound very good either. I'm going to take it off and install our Ford Racing bi-blower.

We're going to start by removing the two clamps that bolt the factory cat-back to the factory H-pipe. I will pull these tabs out a little bit, slide our clamp back. Once the front clamps are loose and moved back to the tail pipes, we're going to remove both the factory hangers to start removing the tailpipe and muffler. There's two additional hangers on the muffler located on each side. At this point what we'll need to do is actually slide the exhaust off the H-pipe and then slide it forward and get it off these hangers. You do want help for this part, the factory exhaust is all one piece and it's quite heavy. You need an extra set of hands to slide it back and remove it.

You need to get four pieces off the factory cap that we're going to use for our new installation. First is the sleeves up here then the factory hangers as well. Now well put the factory clamps onto our new Ford Racing exploit and put it up into place on our factory H-pipe. Now we'll snug these nuts up. You don't have to have them all the way tight, just get them snugged so they don't move.

Before we put the tailpipe into place, we want to reinstall the factory hanger. Make sure the hook goes towards the body. Once you have a hanger make sure you have the clamp in place. Same process for the passenger side. I'll reinstall the hanger bolts. Now you tighten the clamps at the X-plate. Yeah, you get them snug I don't think you all the way tight just yet.

Now we can install the mufflers. Make sure you put a clamp-on first. You want to go up into the hanger and then turn it into place. Once you have the muffler where you want it now we can tighten up our clamp. Now we'll repeat the process on the passenger side. I'm going to go back and tighten the clamps and your installation is finished.

Now of course the part you're really looking for is how it sounds. Huge improvement over the stock exhaust. It's a real aggressive sound; exactly what we're looking for for our 2015. Now we'll do some driving with our Ford Racing bi-blower Cat-Back. Inside the car you can actually hear it's aftermarket. It's got a nice tone to it but it's not overly loud. Definitely it's not stock but not bad at all for normal driving. Let's take it for a spin.

I was always a fan on the Ford Racing bi-blowers in the previous Mustangs and I've got to say I love it on the 2015. It's got a really nice aggressive tone outside the car, but when you're driving it sounds nice. It's got a nice tone to it but not audibly loud inside the cabin for sure. Installation is pretty straightforward. It'll probably take you an hour. You'll be back on the road in no time.