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Magnaflow Street Cat-Back Exhaust (15-18 EcoBoost)

Market Price $1,508.93 You Save 32% ($480.11)
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  • Item 386417
  • MPN# 19097

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    Features, Video & Details

    • Classic Muscle Car Sound
    • Street Series Muffler - Straight-Through Design
    • Durable Stainless Steel Construction
    • 2.5" Mandrel-Bent Tubing
    • 4.5" Polished Stainless Tips
    • Fits 2015-2018 EcoBoost Mustangs

    Review & Installation Video

    Review & Install Video

    What's up, guys? Stephanie with and this is my review of the Magnaflow Street Catback exhaust fitting 2015 and up EcoBoost Mustangs. The Magnaflow Street Catback is going to be great for the S550 EcoBoost owners out there that are looking for more of a toned down or quieter system that isn't over the top or too loud, but one that has a deep sound and a good quality. This is a perfect option for the guys that are not looking for anything too loud, and just want something mild that's going to open up some exhaust flow and give a better sound than the factory exhaust. Like most setups, this catback is going to eliminate the factory resonator and replace it with just a Y-pipe. And not only is this going to open up sound and exhaust flow and ultimately power, but it's also going to bring up some weight too. Magnaflow then gives the system their Street series mufflers, which is a straight through design, but I will say right now that even though they are a straight through design this is not a very loud catback as you guys already heard from the sound clips. This is a two and a half inch catback that is a full stainless steel catback and it's also mandrel-bent. You're looking at four and a half inch polished stainless tips out back, which is awesome in my opinion. Stainless steel's always a great option for the cars that see all different types of road conditions, because it offers great corrosion resistance. And it's nice to see that Magnaflow has stepped up to that two and a half inch system instead of sticking with a two and a quarter inch exhaust, especially considering this is a turbo car and opening up that exhaust is always going to benefit you. I know you can hear that this catback is deeper than the factory exhaust, but it's not very loud. You hear more of the deepness in tone here. And as RPMs climb, this catback stays deep, but it doesn't really increase in volume at all, which is what makes it perfect for those that are looking for a tamer exhaust. I'd even go as far as saying that this catback does maintain some of that stock sound in the higher RPMs, and you can hear it in the sound clips since there isn't a ton of volume here. This catback gives a smooth sound, which makes it sound more like a muscle car than some of the other catbacks that I've heard. Also, I wouldn't say that there's any sound distortion here either because you don't have the volume for that. Maybe more towards red line there's some, but that's normal, even with the factory exhaust. There also isn't any popping or anything on decel. The sound stays smoother as well. And speaking of that, there's no rasp to the system. Some people love a raspy note, and others try to avoid it. So if you're looking for loud or raspiness, then there's some other better options for you on this site. Another plus of having a quieter system like this means there's no interior drone. You almost don't even notice that there's an aftermarket exhaust in the car at cruising speeds, so that means you won't have any trouble having a conversation or listening to the radio on the highway. And so you won't have to worry about dealing with drone on trips. So like most aftermarket catbacks, this one's going to open up some of that nice turbo noise. You can hear the turbo spool and you get some of that blow off noise as well. Now, with all of this being said, you have to keep in mind that this is a four cylinder turbo car. It's not going to sound like a V8. But this catback does have that clean deep type of sound that's relatable to the sound of a V8, so if that's what you're looking for then you're looking in the right place. Overall, this is a deep sounding system that's not over the top at all and is actually quiet when compared to some of the other options that are out there for the EcoBoost, and it's actually one of the quietest systems currently available. So I'm going to give it a two or two and a half out of five on the loudness scale. With catbacks, it really all depends on what you're looking for and luckily there are quite a few options out there. When we start to look at price, we see that this Magnaflow catback is going to be towards the top of the line, costing over $1,000. This is a full stainless steel option so it's not unusual to see these costing more, and this is not the most expensive option that's out there. You're looking at about $1,100, but this is one of the higher quality systems and it also steps up to that two and a half inch diameter. When it comes to the install, you're going to be looking at an easy one out of three wrenches on the scale when we look at difficulty. This is a direct bolt on item, so you won't need to cut anything or modify anything to get it installed. All that you're really going to need is a socket set, and a lift would certainly make things easier, but the job can be done on stands as well. Going to be removing the exhaust from the resonator back, and an extra set of hands can make things easier for you here. You'll be moving the rear hangers to the new catback, so I'd recommend taking them off of the factory exhaust when you drop that. It'll make the swap a little bit easier. The only other thing you'll reuse is the front clamp off of the resonator for the front of the new catback. The whole catback can be dropped as one big piece, which is why an extra set of hands can really help here. When you go to install your new setup, it'll probably be easiest to start from the front and move back. So install the Y and mid-pipe area first, then the intermediate pipes and the muffler assemblies. I'd leave everything loose until you have it all lined up and then tighten it down. The catback does come with four new clamps, so you don't have to worry about picking those up. You can figure on spending an hour or two from start to finish to get all of this done. Overall, the Magnaflow Catback is a great option for those looking for a quieter, but deep sounding system that's not going to be too loud. It's a two and a half inch system that utilizes a Y-pipe, the two Magnaflow Street series mufflers, and it's a direct bolt-on item that requires no cutting. You can check this catback out online some more for yourself and for all things Mustang, keep it right here at

    Free Flowing Exhaust. Magnaflow delivers the ultimate exhaust for the 2015-2018 S550 EcoBoost Mustang with their Street Cat-Back Exhaust. By reducing back pressure for a free flowing exhaust, this Magnaflow catback produces more power and torque where it belongs - at the rear wheels.

    Classic Muscle Car Sound. Give your 2.3L EcoBoost Mustang the deep, classic sound it deserves with a Magnaflow Street Cat-Back. The included Street Series Mufflers feature a free-flowing, straight-through perforated stainless steel core, with stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep muscle car tone.

    Magnaflow Quality. Constructed from durable 2.5" diameter mandrel bent stainless steel tubing for its corrosion resistant properties, this Magnaflow Street Series 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 Street Cat-Back Exhaust will bolt straight up to the factory Mid-Pipe without any extra modifications required on the 2015-2018 EcoBoost Mustang to give it a deeper, classic sound.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 2015 2016 2017 2018 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 GT Mustangs
    Will it fit my Mustang?
    • EcoBoost - 15, 16, 17, 18

    Most Helpful Reviews

    The sound you want

    This is a great sounding exhaust not much louder than stock looks good fits great easy to install the internet sounds of this exhaust don't do it justice if your looking for an exhaust that sounds good ...

    Read More
    Helpful (4)

    Magnaflow Street on an Ecoboost

    The installation was fairly simple and took around an hour or so to install. It was very easy and did not prompt any real trouble aside from the fact that the car sits rather low and it was tough getting ...

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    Helpful (3)

    Overall Rating 5 out of 5 stars
    Read All 10 Reviews

    Customer Photos (3) Submit Your Photo

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    4 Questions / 4 Answers

    Ask a Question

    I realize that sound is the greatest benefit you get from this cat-back exhaust, however there are expected hp and torque gains. Could you tell me what gains are expected and mpg if any.


    • According the the manufacturer the Magnaflow Street Cat-Back Exhaust Will net you about 8-12 horsepower.


    Helpful (1)

    Does it fit Convertible?


    • The Magnaflow Street Cat-Back Exhaust will fit on 15-17 Ecoboost Convertibles.


    Helpful (1)

    Is the exhaust's 2.5" tube compatible with a "Mishimoto Catted Down Pipe" 3" to 2.25" Step Down Adapter?


    • The Magnaflow Street Cat-Back Exhaust is compatible with the Mishimoto Down Pipe

      Rob D

    Helpful (0)

    Is this exhaust compatible with the BBK 3in Down pipe?


    • The Magnaflow Street Cat-Back Exhaust (15-17 EcoBoost) has a pipe size of 2.5". The BBK Down Pipe - Catted (15-17 EcoBoost) item #389776 ( & BBK Down Pipe - Off-Road (15-17 EcoBoost) item #389775 ( requires a cat-back exhaust system that is stock or 2.25" so unfortunately the Magnaflow Street Cat-Back Exhaust (15-17 EcoBoost) will not work.


    Helpful (0)

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    Customer Reviews (10) Write a Review

    Overall Rating 5.0

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:$100-$250

    • Loudness / Volume 4 4
    • Exhaust Note 4.9 4.9
    • Fit & Finish 5 5
    • Bang For Your Buck 5 5

    • 5/5

      Installation Time: Afternoon

      March 11, 2017

      The sound you want

      This is a great sounding exhaust not much louder than stock looks good fits great easy to install the internet sounds of this exhaust don't do it justice if your looking for an exhaust that sounds good and isn't loud to where the neighbors wants to kill you and have a lighter more free flowing exhaust this is the one


      Year: 2016 Submodel: EcoBoost

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      July 25, 2015

      Magnaflow Street on an Ecoboost

      The installation was fairly simple and took around an hour or so to install. It was very easy and did not prompt any real trouble aside from the fact that the car sits rather low and it was tough getting underneath the car only on a set of ramps. The job would likely be even easier provided you had a lift. The sound is amazing and quality of the product is perfect. It is by far one of the best sounding exhausts for the Ecoboost in terms of a V8 sound.


      Year: 2015 Submodel: Ecoboost Paso Robles, CA

      Helpful (3)

    • 5/5

      April 09, 2017

      5 Stars but I kinda wish.....

      So the Magnaflow is a great exhaust but after having it on for about 6 months, I kinda which I had the competition. I didn't wanna sound too RICER and loved the reviews of how deep tone and subtle it is. But honestly, its a little too subtle. Kinda wish it was a bit louder. I didn't want to the drone which this doesn't have but just about every car I come across sounds better than my car. If you haven't purchased it it, go with the competition instead of the street. I'm pretty sure I'll upgrade my exhaust yet again.


      Year: 2016 Submodel: EcoBoost

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      January 19, 2016

      Great Sounding Exhaust Note!

      I bought this as the first mod for my Ecoboost Mustang. This item really improves the tone of the exhaust, especially to a bystander when in a parking lot or parking garage. I had hoped it would be a little louder, but did not want the loudness that I had heard on the Magnaflow Competition catback. The reason for this is that I am planing on putting in a high flow cat which will further increase the noise. I recommend unbolting the exhaust hangers instead of pulling the stock exhaust out of the hangers as mine was pretty stuck.


      Year: 2015 Submodel: Ecoboost Houston, TX

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      October 11, 2015

      Relieved and impressed

      I held off upgrading the exhaust for 6 months hoping I'd get to hear a good one in person but no luck. I really didn't want the loud obnoxious 4 cylinder sound and I use the phone frequently to make business calls on the road so I need to be able to hear. This exhaust is perfect! It has a nice low tone. When you get on it, it sounds good but when you're at light pedal like cruising on the highway at 70 MPH you can barely hear it. The tips look great. The whole exhaust is very high quality. Install was super easy. I usually have an exhaust shop do installs, worried about welding and hanger locations. Plus I always take at least twice as long as the instructions say. This took 2.5 hours from unboxing to finished cleanup, super easy.


      Year: 2015 Submodel: Ecoboost Maryland

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      August 18, 2015

      Awesome Product

      I love this exhaust, the price was very good, installation was not bad. It gives the car a nice deep sound, its not too loud where its annoying to drive as a daily driver, but loud enough to hear it and make you happy when you drive. I have been told that it sounds very nice when I pass people on the highway. I would 100 recommend this exhaust to anyone with an EcoBoost and I would recommend the brand MagnaFlow to anyone that wants an after market exhaust. I worked at a performance shop as the web master and I saw many orders of MagnaFlow exhaust.. now I know why.


      Year: 2015 Submodel: Ecoboost Boca Raton, Fl

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 15, 2017

      Not too noisy...just right

      This Cat Back is exactly what I wanted and sounds like advertised. I'm not looking to turn my neighbors' heads every time I drive down the street, but this system is still aggressive sounding when compared to the factory stock system.


      Year: 2017 Submodel: EcoBoost

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      May 29, 2017

      Music to my ears

      The sound on the touring exhaust is just right, smooth and quiet when just driving the highway and loud tone when you really get on the throttle. I enjoy the system. The fit was as it should be and went on very easily. Great product!!!!!


      Year: 2016 Submodel: EcoBoost

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      June 28, 2016

      You will love this system.

      Good deep exhaust tone. It sounds even better as the rpm's climb. No drone and it's very quiet inside the car. The system goes together easily and the polished tips really complete it.


      Year: 2016 Submodel: Ecoboost

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 20, 2017

      Magnaflow Street Catback

      I listened to dozens of exhaust videos and this exhaust was the best sounding of them all. Very mellow and smooth.


      Year: 2017 Submodel: EcoBoost

      Helpful (0)

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