ACCELATEC Resonator Delete X-Pipe Aluminized Steel GT 2015-2021

We found one of the easiest ways to improve the exhaust system of your 2015 Mustang GT is to get rid of the heavy restrictive factory resonator. By removing the resonator could provide more flow to your exhaust, which will increase horsepower and increase sound regardless whether you have a stock or aftermarket axle-back system. Today, we're going to turn up the volume on our 2015 Mustang GT convertible by installing this Resonator Delete X-Pipe. This Resonator Delete X-Pipe is made of aluminized steel and it's a direct replacement for the factory pipe. It will require cutting, but once installed, it's going to save weight over the factory resonator as well as providing additional flow and a louder exhaust tone.

For this installation, a lift or a jack and jack stands, 3/8 ratchet, 13-mm socket, 15-mm socket, tape measure, marker, Sawzall, and safety glasses. A resonator lead's going to go right here and replace the factory resonator. What we got to do is unbolt the exhaust in the front, take the whole system off so we can cut it back here. You don't want to cut it on the car. The main reason why, when you cut here, it's going to provide sparks. This plastic cover here is your fuel tank. Not a good place to cut the car. The exhaust is easy to get off. We're going to pull off our cat-back and then start the cutting.

Whether you have a stock system or an aftermarket axle back, the removal is the same process. Remove these 2 bolts here to get rid of the hangers, then remove the 4, 15-inch bolts up front. Now, we're going to line up the X-Pipe to figure out where to cut. We know it's roughly about 4 inches off the resonator. Basically, we do is we put the pipe on top, can line up everything and take a look. We go 4 inches off, goes right down the middle, which looks good. We have the pipes cut off. Instead of connecting this to the pipe we just cut, we're going to start by putting this in the factory location and then we'll add the tailpipes. We'll slide in the clamps and tighten it down. Now, we're going to snug these down. Don't make them tight yet because you probably will have to make adjustments later.

I'll put the tailpipes back on. We'll start by putting them in the rear hangers. Now, we'll slide the factory tailpipe into our new X-Pipe. Now, we'll do the same process with the passenger side. Now, we'll line up the clamps and tighten it down. Now, we'll snug up the factory front clamps, put in the rear bolts, and the installation's finished. Now, let's see how it sounds with the Resonator Delete X-Pipe. Removing the resonator totally changed the volume. This car's at least twice as loud, and much more aggressive.

This setup is definitely loud. We've done the MRT H-Pipe in the past. I'm sorry, the MRT X-Pipe in the past with the standard Roush axle-back, and that was definitely one of the louder systems. I mean, it's been hugely popular. I know a lot of you guys love it. If that's the sound you're looking for, this is the quad tip version. I actually think its possible with the quad-tip mufflers with this new X-Pipe, I think it's even louder. If you want to make an entrance, this is the way to do it. I'm cruising at 2000 rpm on the highway. It doesn't have drone, but you hear it. I mean, you know it's back there. A lot of systems like we've recently done where on highway speeds the exhaust goes away. The case of this, it's definitely still there but it doesn't have that droning tone that'll drive you nuts on the highway. You just hear the exhaust.

Yeah, this thing's loud till about 3500 and then it gets even louder. Here we are again cruising highway speeds 2000 rpm where most mufflers are going to have the most noticeable drone to them. It's perfectly livable. I mean, you know it's back there and you can hear it, but it's not like one of those tones that just gets really old after a while. Even at highway speeds downshift, you hear it in a hurry. That's 3 grand and it gets a lot louder at 4. Without a doubt one of the most aggressive sounding systems we have in a 15 yet. It might not be for everybody, but if you like that loud aggressive tone, it's a good choice.

As you can tell, adding the Resonator Delete X-Pipe totally changed the sound on our 2015 Mustang. While it sounded good with the original mufflers, it sounded even better with the Roush. By getting rid of the resonator, it totally changed the car. It's a much louder overall tone. We did weigh it as well and you're saving almost 10 pounds by getting rid of the factory resonator and going to the lead pipe. Overall, the installation's pretty straightforward. It'll take you around, so you'll be back on the road in no time.