2015-2017 Mustang GT Roush Cat-Back Exhaust – Fastback Sound Clip & Review

2015-2017 Mustang GT Roush Cat-Back Exhaust – Fastback Sound Clip & Review


Hey, guys, Adam here with americanmuscle.com,
today we’re taking a closer look at, installing, and of course listening to the Roush Cat-Back
Exhaust available for the ’15 to ’17 Mustang GT. As you just heard from our sound clips right
off the bat guys, I’m giving this four out of five on our loudness meter. It is extremely aggressive, very loud and
pretty raspy but it isn’t too overwhelming like you’d get with a five out of five kit. This guy here has all top quality materials
T-304 stainless steel throughout, mandrel bends to help with increased airflow. It does have a resonator delete with an integrated
X-pipe which is gonna contribute to that sound giving you a nice loud raspy tone and it also
has bullet-style mufflers that are a straight-through design for high flow and increased volume
without having excessive drone. Now, this kit does have a little bit of drone
at highway speeds but again, not excessive, not overwhelming. You could definitely have a conversation in
the cabin and listen to music freely but I will say start to finish on the RPM band this
guy is loud and it is aggressive. Now, because it has all those high-quality
materials and it carries that really reputable Roush name, it does carry a price tag of right
around 1100 bucks, not the highest price tag on the market but it isn’t really an entry
level kit either. It’s for the guys who know they want that
T-304 stainless with that integrated X-pipe. Now, 304 stainless is a great option for guys
like us here located on the East Coast, we see a lot of road salt in those wintery weather
months and if you’re not having a garage queen of a car, then you definitely want an exhaust
that’s gonna hold up in the long haul, 304 does that trick. As far as install is concerned, it’s gonna
get two out of three wrenches on our difficulty meter here, no welding, no cutting of the
factory system. It is a direct bolt-on but it is a little
bit more involved. Now, the cat-back here is gonna go on in a
couple of different pieces, X-pipe, mid-pipe and then finally your bullet-style mufflers
and tips. Factory exhaust comes off all in one piece
which should be pretty simple. It’ll take you about two hours from start
to finish with very simple hand tools. I’m gonna show you every step of the way,
let’s get to it. Tools used in this install include an impact
gun, extension, 13 and 15-millimeter deep sockets, also recommended would it be a hanger
removal tool, a mallet and WD-40 or something similar. First up here guys, grab a 15-millimeter deep
socket, we’re gonna loosen up but not completely remove the nuts on both of the band clamps
here connecting your factory resonator to your headers. So, we’re just gonna loosen these guys up. All right. Next step we’re gonna be at our rear subframe
right behind our diff. Now, you’ll see these hangers connect to the
subframe itself using two 13-millimeter bolts. Now, we don’t have to remove the hangers from
the isolators, we’re actually just gonna unbolt the whole isolator bracket from the frame. So, grab a 13-millimeter socket, and I like
to use an extension to go right over the sway bar and we’re going to remove these. Now, from there, what I’m gonna do is just
lift up on this and swing these guys down. There’s a little locking tab here that just
hooks in, we just wanna unhook that. So, you may have to lift up on the exhaust
and then bring it down. All right, next step before we remove the
whole exhaust to one piece, I recommend grabbing WD-40 or something similar with this needle
here to just lubricate the hanger above your tips. This is gonna make removing it a whole lot
easier. All right, do the same thing on the other
side. Next step guys, we’re gonna take our exhaust
off all in one piece. Now, you may want a helping hand if you’re
using a lift like we are, if you’re working on the ground, might be a little easier for
you to do by yourself. I’d recommend having a mallet to knock these
band clamps back a little bit, disconnect it from this side, swing it back toward the
front of the vehicle and set it aside. Got it? All right. So, we got our factory exhaust off of our
2015 GT and it’s on the ground here next to our Roush cat-back. I wanna take you through some of the similarities
and differences between the two kits. Let’s start at the front of the vehicle. Now, as you can see, our new Roush cat-back
is a resonator delete replacing the factory resonator, which really slows down the airflow,
is a lot more restrictive than an aftermarket pipe like this one. And overall is really not gonna give you the
sound that you want, or at least not the volume. Your new kit has an X-pipe integrated into
the system which is gonna tremendously help with airflow. That in combination with the mandrel bends
is really gonna help reduce any airflow restriction and the X-pipe is known to give you a nice
raspy, louder volume and more aggressive tone than its counterpart being an aftermarket
H-pipe. Moving on from there, the entire kit here
is a mandrel bent 304 stainless steel, highest quality materials you can get in the category
which means it’s gonna last a lot longer and have less chance corroding and rusting out
unlike your factory exhaust here. Now, this is a good option to get if you’re
located like us here on the East Coast seeing a lot of road salt. 304 stainless steel is gonna hold up a lot
better to the weather elements and the road salt which is known to corrode some of those
exhaust pipes and the undercarriage of vehicles. So, moving right along here you’ll see a big
difference in size between our new bullet-style muffler from Roush and the big factory mufflers
from Ford. Now, these mufflers do muffle a lot of that
sound exactly like it sounds like but it’s really restricting that airflow as well. So, upgrading that to the high flow straight-through
muffler it’s really gonna open things up, produce a lot more volume and a lot more aggression. Exiting out the rear here, the last thing
we’ll talk about is the 4-inch polished stainless steel, 304 stainless steel tips. Unlike the smaller three, three and a half-inch
tips from the factory. These look a lot better, they’re a lot more
polished, a lot more attractive and they’re gonna hold up a lot longer as well. Ours is starting to discolor, not necessarily
rusting, but it is losing its flashiness. Not gonna be the case here with the 304 stainless
from Roush. And finally, it’s get the Roush name embedded
on the top, so it does add a nice little piece of repping the brand name right out the rear
end. Now, they do have this option with black tips
if you’re looking to get a little bit more stealth out of the rear, but the chrome does
blend in with a lot of the exterior parts already on the Mustang. So, I think it does look pretty good, but
the black option is there, it’s all personal preference. Now, before we get to the install, we do have
to transfer over our hanger brackets that we removed from the rear subframe. So, let’s pop those guys off and transfer
them over. All right. So, I’m gonna use a hanger removal tool, makes
life a lot easier. If they are giving you some trouble here you
can use WD-40 again, like we did up on the vehicle, let’s see how these pop off. Just gonna put this guy around, give it a
pinch and they’ll slide right out. All right, same thing other side. All right, let’s transfer them over. Now, when you’re swapping these over you wanna
make note of this tab here, the tab at the top you want facing the front of the vehicle. So, let’s slide these on just like that and
push them down until we install them. All right, tab facing the front, slide them
on, bring it down. First step of the install, you’re gonna need
your factory band clamps off of that resonator portion of your factory cat-back. So, grab those guys, you’re basically gonna
line up the open hole and tab here to the little welded on stopping button, that’s gonna
pretty much align these. So, we’re just gonna slide these guys on just
like that all the way back. All right, next up is our X-pipe. Now, as you can see the outlet for the X-pipe
going toward the rear, one of them veers off to the left a little bit. That’s gonna be your passenger side. So, we’re gonna install that guy just like
this and slide them into those factory band clamps. All right. So, grab your 15 socket and we’re gonna tighten
these guys down. Next step, grab your passenger side pipe here,
we’re gonna start there, make sure you have a clamp over the end connected to your X-pipe
and then we’ll hang up this bracket on the subframe. We’re gonna rotate our bracket up and hook
this tab into that bracket up on the subframe. Align the pipe where you need it to be, rotate
it horizontally, let’s tighten down the clamp. All right. So, now we can take that clamp and tighten
her down. Repeat the same thing on the other side. Next up, we’re gonna do our muffler on our
passenger side. Make sure you have a clamp over the inlet
there. We’re gonna slide the hanger into the isolator
first and then connect our pipe. I’m gonna bring it up here, push this guy
in, line up our pipe at the back and slide them in. Now, tighten down this clamp. Now it’s a good idea when you tighten down
this clamp beforehand to just push up the pipe and make sure it’s aligned generally
where you want, we can go back and make adjustments later if need be. All right, same thing on the other side. Start with our hanger, slide that guy into
place, and then connect your pipe. All right, last step’s pretty simple. Grab your tip, along with another clamp, slide
that guy into place and tighten it down. All right, do the same thing on the other
side. Once your tips are in place here guys, go
back and make sure everything is aligned where you want it to be. Look at the tips inside of that rear valance
to make sure they’re centered. Tighten all your clamps down so there’s no
exhaust leaks and make sure nothing would rattle on the frame or anything else, then
you’re good to go. That’s gonna wrap up my review and install
for the Roush Cat-Back Exhaust fitting all ’15 to ’17 GTs. This is gonna be a great fit for you and your
S550, you can get yours right here at americanmuscle.com.

About the Author: Michael Flood

4 Comments

  1. Shop this Roush Cat-Back Exhaust: https://muscle.am/2lb5DA8

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  2. I love my Roush axle backs… they are mated to a Corsa double helix x pipe and Texas Speed longtubes and it sounds amazing!

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