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Magnaflow Competition Cat-Back Exhaust (15-17 EcoBoost)

Market Price $1,508.93 You Save 32% ($480.11)
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  • Item 386416
  • MPN# 19191

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Features, Video & Details

  • Aggressive Muscle Car Sound
  • Stainless Steel Construction
  • 2.5" Mandrel-Bent Tubing
  • 4.5" Polished Stainless Tips
  • Fits 2015-2017 EcoBoost Mustangs

Review & Installation Video

Review & Install Video

Hey, everybody, I'm Justin with AmericanMuscle.com, and this is my detailed review of the Magnaflow Competition Catback Exhaust System, available for your 2015 and up EcoBoost-powered Mustang. You should be checking out the Competition from Magnaflow if you're after a top quality exhaust system made from 100% stainless steel, and one that's going to add a deep and aggressive tone to your EcoBoost Mustang. Now Magnaflow even goes a step further, and offers prospective buyers the option of grabbing this system in a more traditional polished or silver version, like we have on the table here, or for a few bucks extra, you can grab this system with black mufflers and tips for a totally different look. Magnaflow is without a doubt one of the most popular and well-known names in the industry and for good reason. Their systems consistently offer great sound, quality, and fitment. Now, guys, this is an exhaust after all, so let's talk about the sound you might expect with this thing, and as you heard with our sound clips, the Magnaflow Competition is going to deliver a deep and aggressive tone for your EcoBoost with the included Y-pipe. In fact, it's probably one of my favorites for the EcoBoost-powered S550. Now, even though the Competition muffler is traditionally one of Magnaflow's more aggressive systems, this thing is not going to be over-the-top. It's not going to be raspy. In fact, it's going to be very daily-driver-friendly and be pretty quiet while cruising on the highway. Overall, though, you're still getting some good volume, so I'll call it a solid three, maybe even a four out of five on my one-to-five, or one-to-wake-the-neighbors scale. Breaking down the construction with the Magnaflow, guys, here's what you can expect: durable 409-grade stainless steel throughout, including the 2½" mandrel bent tubing, the included Y-pipe that does utilize the 2¼" factory connect, or will work with any aftermarket downpipe as long as it includes a 2¼" connection. You're also getting the Competition series mufflers here from Magnaflow, and finally, their large 4½" tips, again, in polished or black, your choice. I do want to point out that to my knowledge, guys, Magnaflow's one of the only companies offering a large 4½" tip. Most of the other offerings I've seen are basically 4". I prefer the 4½" tip because I think it looks much better on the S550, just fills out those bumper holes perfectly. Now, as you heard me mention earlier, guys, you do have a couple of options when it comes to picking up the Magnaflow. For instance, we do have the more traditional polished version on the table here. This thing's going to set you back just north of $1,000, or for a couple hundred bucks more, you can grab it in the black powder coating with the mufflers and tips here if that's the look you're after. This system is made in the U.S.A. and, of course, it is backed by Magnaflow's lifetime warranty if you should ever need it. Now, one small nitpick here with the Competition series, guys, is that the materials, for the price you're paying, I would have preferred to see the 304-grade stainless as opposed to the 409 that they used. It really isn't going to affect the performance whatsoever, but it's something I just wanted to point out. The Magnaflow does feature a bolt-on or clamp-on design, so no cutting, no permanent modification needed whatsoever, so for you guys, expect a very easy one-out-of-three wrench job on my overall scale of difficulty. Now, removing that factory exhaust can be a little cumbersome since it is one piece can be a little heavy, so while not needed, an extra set of hands would certainly make your life a whole lot easier. When it does come time to bolt this thing up, though, get some basic hand tools ready. Basically, a socket set, a few wrenches is really all you're looking at here, guys. You're only going to need about an hour or two in the garage or driveway to get this thing bolted up. And, of course, all of your work is done underneath the car, so make sure you have your jack and jack stands ready to go, race ramps or a lift if you're one of the lucky ones. All right, guys, armed with those sound clips and my review, hopefully, you have a better idea of what to expect with the Magnaflow Competition and if it's going to be the right system for you and your EcoBoost. Now, what I can tell you is that the Magnaflow's built extremely well. It's going to offer some nice, well-rounded sound with a good amount of volume. So be sure to learn more about the Magnaflow options for your EcoBoost Mustang, right here at AmericanMuscle.com.

Add Horsepower. Stop denying your high powered 2.3L EcoBoost Mustang the power it deserves by keeping that factory exhaust system. Enjoy more horsepower and torque with a Magnaflow Competition Cat-Back, by reducing back pressure and giving your Mustang a free-flowing exhaust.

Aggressive Muscle Car Sound. Give your EcoBoost Pony a deep, aggressive rumble by adding this Magnaflow Competition Cat-Back. This premium quality exhaust features free-flowing, straight-through mufflers that increase power and give your 2015-2017 EcoBoost an unmistakable muscle car sound.

Magnaflow Quality. Constructed from durable 2.5" diameter mandrel bent stainless steel tubing for its corrosion resistant properties, this Magnaflow Competition Cat-Back features two straight-through mufflers with brightly polished 4.5" stainless tips, that exit in the stock locations for impressive muscle car looks and sound.

Application. Made to be a direct bolt on, this Magnaflow Competition Cat-Back Exhaust will bolt straight up to the factory Mid Pipe without any extra modifications required on the 2015-2017 EcoBoost Mustang.

Note: Coupon codes cannot be applied to this product.

Fitment: 2015 2016 2017 Details

What's in the Box
  • (1) Right muffler assembly
  • (1) Left muffler assembly
  • (1) Right tailpipe assembly
  • (1) Left tailpipe assembly
  • (4) Clamps
Installation Info
Tech Specs
Cat-Back Exhaust Specifications
Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 2.5" Tip Size: 4.5"
Muffler Type: Straight-through Fitment: 2015-2017 EcoBoost Mustangs
Will it fit my Mustang?
  • EcoBoost - 15, 16, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

The Best Deep and Aggresive Sound

This Magnaflow was just perfect for me... Its a Deep and Quiet Exhaust when not Steeping on gas but when you accelerate ohh man it will break necks for sure beautiful sound I can't stop stepping on gas ...

Read More
Helpful (1)

Giddy UP! Easy Install and it Sounds Great

Installed on a 2016 Ecoboost and I'm LOVING it. The sound is good - when you punch the throttle your presence will be known. But its not too loud for my daily driver, or my quiet neighborhood. I ...

Read More
Helpful (1)

Overall Rating 4.8 out of 5 stars
Read All 11 Reviews

Customer Photos (3) Submit Your Photo

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4 Questions / 4 Answers

Ask a Question

Is the borla atak louder than the MF competition?


  • They are equally as loud as each other, but 2 separate tones based on muffler/resonator design.


Helpful (0)

will calibration be required after installation


  • Hello! Adding this catback does not require a tune, however it will help you squeeze a little more power out of the exhaust!

    Doug P

Helpful (0)

Will competition cat back fit in the convertibles?


  • This will fit on the convertible model Mustangs.


Helpful (0)

which downpipe will best fit magna flow competition cutback for ecoboost mustang?


  • Hi,we will need more info about your build to help you with your question about a down pipe to use with this Magnaflow Competition Cat-Back Exhaust please feel free to give us a call or send us a email so we can help you with your question. http://www.americanmuscle.com/contact.html

    Chris J

Helpful (0)

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Customer Reviews (11) Write a Review

Overall Rating 4.8

out of 5 stars

Installation Time:Afternoon

Installation Cost:$250-$500

  • Loudness / Volume 4.6 4.6
  • Exhaust Note 4.7 4.7
  • Fit & Finish 4.9 4.9
  • Bang For Your Buck 4.7 4.7

  • 5/5

    June 20, 2017

    The Best Deep and Aggresive Sound

    This Magnaflow was just perfect for me... Its a Deep and Quiet Exhaust when not Steeping on gas but when you accelerate ohh man it will break necks for sure beautiful sound I can't stop stepping on gas now hah... This was definetely worth it...


    Year: 2016 Submodel: EcoBoost

    Helpful (1)

  • 4/5

    Installation Time: Less than 1 Hour

    February 18, 2017

    Great exhaust

    Easy to install, all parts were in superb condition, welds were imaculate, wish it was a little louder but still sounds good. Took 20 minutes to install. Very happy with my purchase


    Year: 2015 Submodel: EcoBoost

    Helpful (1)

  • 5/5

    August 17, 2016

    Giddy UP! Easy Install and it Sounds Great

    Installed on a 2016 Ecoboost and I'm LOVING it. The sound is good - when you punch the throttle your presence will be known. But its not too loud for my daily driver, or my quiet neighborhood. I was worried the car might sound like a loud lawnmower since its not a v8, but it has a nice throaty sound! I'm happy with it, it was just what I was hoping for. I don't think the videos I've heard, including the one I made, really capture the sound correctly. Not sure why. But it has a nice throaty note now. Install was super easy! Quality Build. No adjusting or tweaking was needed. (as a FYI, this system install was a Huge Huge difference from the install of different manufacturer that was done the next day on another 2011 Mustang, Had to spend a good 30 minutes trying to get that system tweaked so it fit properly, and the quality of the pipe work was just not the same as Magnaflow!) The quality of work/bends and construction of this system far outweighed the other manufacturer, and this system was built and spec to fit like a glove in the 2016 Ecoboost. If you are on the fence with this system or others due to price, just pay the $. The quality here is evident when I had the 2 systems side by side. Removal of old system and install of this was an hour tops.


    Year: 2016 Submodel: Ecoboost

    Helpful (1)

  • 4/5

    Installation Time: Less than 1 Hour

    May 12, 2016

    Deep sound

    If you're not a fan of deep tone than this thing is not for you. I had a little problem while installed this at a shop. The tips fitted awkwardly but we were being able to solve the problem. Overall very good quality, I'm happy with the sound and the look, though the tone is too deep it could get annoying time to time when you were in traffic. Ps: the installation fee was $80


    Year: 2016 Submodel: Ecoboost

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 12, 2016

    Magnaflow Catback Exhaust

    Great sound and deep tone. Drastic difference between the stock exhaust and the Magnaflow. Great product and mod would definitely recommend this exhaust to anyone looking to upgrade their Eco boost exhaust note!


    Year: 2016 Submodel: Ecoboost

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    January 30, 2016

    So glad I bought it!!

    It definitely doesn't sound like a V8, but man I am happy!! I wanted this to be my sixth Mod, but I could stand hearing the stock exhaust. The only thing about it, is that you MPG will be at least 16MPG.. And 11MPG if you want to keep pushing it to hear it lol.. I'm enjoying every second of my car now. I though I was buying the EcoBoost to save gas, But now I don't even car about it lol.. Before I was getting at least 25MPG.. I'm giving you the go ahead!!! You won't regret it!! P.S I gave it a five star, because it's the only exhaust out there that gives you the aggressive sound for the EcoBoost.. ((You won't have to look elsewhere to find it))


    Year: 2016 Submodel: Ecoboost Brooklyn, NY

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    November 15, 2015

    Super easy install

    Notable difference when throttling. I carries a deep note outside, but also a steady hum can be heard from the interior. This may get annoying over time...or not ;) Im an old Jeep enthusiast and used to working on my own vehicle, so anybody with any mechanical ability will find this install extremely easy. The install took about 40 minutes working alone in a shop with a lift. I paid $6 for the stall and only used 1 socket. This was a super-easy install with NO cutting. Hint: remove the rear mid-section bracket holders when removing the stock pipes. It's easier. Highly recommended.


    Year: 2015 Submodel: Ecoboost Seattle

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    September 22, 2015


    This exhaust is sweet! Its just what I needed to bring this monster to life. The sound and look are perfect!


    Year: 2015 Submodel: Ecoboost Naples, Italy

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    June 29, 2015

    Great looking and aggressive deep sound

    I have to say that I chose the right product. As we all know the ecoboost mustang's 4 cylinder turbo sounds too smooth and weak so definitely the exhaust has to have a deeper tone to cover the turbo sound. Magnaflow competition exhaust is clearly a very good choice. It took me about 1 hour to finish changing, the product has a very fantastic looking on the car also. As you start the engine you will hear a very deep and strong sound coming from the back of the car, it really sounds much better than the stock exhaust, and also lighter too. I love the put to "S" gear as the rpm will goes higher and the sound is more attractive. Now, if you're looking for something loud and crispy, you may have a look at Borla Atak or Flowmaster outlaw, because Magnaflow sounds very deep, as I would say this is one of the most "V8" sound for ecoboost. People may ask me the competition and street which is better, well, the competition is louder of course, and sounds thicker I guess. Personally speaking competition is loud but not noisy, the volume is just enough to hear. Overall, I highly recommend this product.


    Year: 2015 Submodel: Ecoboost San Francisco, CA

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    May 17, 2015

    Deep Tone Screams When You Step on it!!!!!

    Night and day difference from the stock exhaust to this Magnaflow Competition Catback. I can't speak on the installation difficulty as I had a shop do the install, but they told me it took about a couple of hours to install. This exhaust has a MUCH deeper tone than stock when idling. It's not over the top loud in my opinion especially when cruising along but when you step on it, it lets you know its there! Some drone when hovering around 2k RPM and I know some folks will say any drone is bad but it's not loud to me at all or irritating in the least. You'll notice it more when in Sport mode as it keeps the RPMs higher but not so much when drive mode is normal. If this sounds concerning to you, go with the Street Catback as those mufflers probably eliminate this. The competition model is designed to be loud, and when combined with a cold air intake that vents to atmosphere, the sound is incredible. Overall, I'm very satisfied. Always heard good things about Magnaflow's exhaust kits and this validated what I've heard. Price is right about where a majority of exhausts cost for the Ecoboost model and if you're looking for more bass in your exhaust as well as one that sounds great when you step on it, look no further!


    Year: 2015 Submodel: Ecoboost Staten Island, NY

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    May 08, 2016

    Deep and loud but never noisy.

    I was extremely worried that this would be too loud and almost bought the Magnaflow Street Catback. Honestly, its not as loud as you or your neighbors would imagine. The loudest it gets is during a cold startup, especially in a small garage, but again it's not THAT much louder than factory. The tone is what differs the most. You will hear a subtle purr while idle, and an audible growl during acceleration in the cabin. Of course, the looks are top notch and the install was easier than removing the factory exhaust. I got it done with a jack and jack stands, and I've never done maintenance on a car before this. One thing I would recommend is taking off the four bolts holding up both factory mufflers near the rear bumper, and resting the rear end of the exhaust on the ground; it will be easier to slide the resonator end out of the factory down pipe, which was the most difficult part for me. Anyhow, get this if you are stuck between the comp and street series, as long as you're not afraid to be heard.


    Year: 2016 Submodel: Ecoboost

    Helpful (0)

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