(approx) 2 Hours
Light to Moderate mechanical skill required.
- Customer Submitted:
- How to Install Magnaflow Street Cat-Back Exhaust on your Mustang
Hi everyone. Justin with americanmuscle.com.I'm going to be taking a closer look at the Magnaflow Street Catback Exhaust System fitting your 2015 Mustang GT.Now before we start breaking down the Magnaflow, I want to remind you guys to subscribe to our YouTube channel, if you haven't done so already, for more exhaust overviews and sound clips in addition to other great Mustang content.So the Street Catback from Magnaflow is just that, a perfect exhaust for the street for those of you looking for a little bit more power and sound out of your 2015 GT, or want an exhaust that you can live with every day.Now with that being said, the Street Catback probably won't win you any muffler revving contest in regards to overall volume. And if that's something you're concerned with, then you might want to check out the Competition Series Catback instead, also from Magnaflow.Either way, if you want to hear what more 2015 owners are saying about this very exhaust, then click on the link below to head back to our product page at americanmuscle.com. if you're not there already.The Street's Classic 30 muscle car rumble is made possible thanks to the slightly more traditional chambered mufflers and brightly polished four-and-a-half inch tips. Now, this entire system has been constructed from 100% stainless steel including the three-inch mandrel-bent tubing, the included crossover or X-pipe, which takes place of that suitcase known in the factory exhaust system, and finally, these chambered mufflers which I just talked about.Now it is also worth mentioning that this system is considerably lighter when compared to your factory exhaust. So besides that nice little benefit of power and sound, you can also expect to shave roughly 30 pounds from your factory exhaust.Removing your factory exhaust and installing the new Magnaflow will be made much easier here in the 2015, thanks largely in part to these cars being independent rear suspension, meaning you won't have to mess with the over axle pipes.So that being said, removing that factory exhaust and getting this thing bolted up should only take you about two hours from start to finish using basic hand tools.Now it's time to hear how the Magnaflow Street Catback sounds compared to our factory exhaust.
Subscribe to our YouTube Channel
Features, Description, Reviews, Q&A, Specs & Installation
Note. Coupon codes cannot be applied to this product.
Fitment: 2015 2016 2017
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
April 06, 2020
I love this catback system. It was a perfect fit and sounds amazing, plus the fact that you loose about 35 pounds of weight really helps. The exhaust is not to loud but has a nice rumble to it and that is what I was looking for. I could not be happier with it.Helpful (0)
February 18, 2020
Great Fitment and Sound!
Installation was straight forward. Perfect fit. Had these for about 6 months now. At first the frequency of the new exhaust note kind made me feel nauseated, but that went away after the next drive. Sounds like a proper Mustang now! I've shaken it down after a few months now, and the only thing I can say that would be a "con" is the drone in 6th gear if you're not accelerating or at least going 80 mph. I like to keep it in 5th to avoid the drone. Love the sound in the lower gears! Magnaflow is the way to go! Tech Tip: make sure you unplug the differential sensor cable before you remove the old exhaust and tie it out of the way. I broke the cable when removing the factory exhaust (hanger got caught on the way down and ripped the cable out of the connector and pins), I tried to repair, but the pins do not come out. I ended up purchasing a new connector with a pig tail from Ford(green cable in the pic). Took all day, but otherwise this should have been an afternoon install.Helpful (1)
October 04, 2019
Great looking and sounding exhaust
This exhaust is much quieter than the glass packs with H pipe that were previously installed. It has a great low rumble, and nice tone when the revs increase. It is a little quieter than I was expecting, so no worries if you are wondering if its too loud. Not at all. Overall a great sounding and high quality exhaust! A little too pricey for me to give that 5th star though.Helpful (0)
September 07, 2019
Love the sound of this exhaust. Not to obnoxious. Very happy with this system for my wife’s 2015 GT.Helpful (0)
July 15, 2019
Sounds great but fitment issues
This system is designed to fit both the fastback and convertible models. Overall quality of materials was very good including the polished mufflers and exhaust tips. Installation was generally easy and straight forward and comparable to other systems I have installed. However, the hangar rod on the left muffler was not welded in the correct position causing the exhaust tip to be about 1.5 inches low when placed in the stock hangar mount (note: the right side muffler was correct and fitted up perfectly). My solution was to cut the hangar rod and re-weld it in the correct position. Not a big deal but shouldn't have to do this with a premium cost system, thus the 3 star rating. Sound is great, just as expected.Helpful (3)
February 17, 2019
Was looking for a great sounding exhaust upgrade that wasn't too loud. This fit the bill perfectly for my 2015 Mustang GT convertible. Great tone, gets loud enough when you get on it.Helpful (3)
October 10, 2018
Muscle car rumble without making a scene
I'm exceptionally pleased with how my 2017 GT sounds now. It definitely ups the ante regarding idle purr and across the board, but not in an obnoxious way. The sound is just loud enough, and I can't imagine getting anything that's twice this loud like some of the other products for sale (unless that's your thing). I had it professionally installed along with the Ford Racing Pack 3 (plenum and CAI), and overall that took about 2.5 hours. I'd consider this system a must-do if you're looking for a more muscle car sound! Also the tips look amazing.Helpful (8)
August 09, 2018
Just the right amount of rumble....
Originally purchased a Magnaflow Foose exhaust for my wifes 50th Anniversary Mustang GT. Unfortunately, that muffler proved to be defective (started rattling after a few weeks), but AM worked with me to get another exhaust, but this time went with the Street. The note is exactly what we were looking for, a nice deep rumble to let everyone know you're sporting a powerful V8 under the hood, and enough bark when you get into the "go pedal". The large tips fill out the rear valance cutouts perfectly, and the system looks great underneath. All in all, very pleased with this system.Helpful (9)
July 25, 2018
This exhaust far exceeded my expectations. The sound is nothing short of amazing. Easy install. No drone, you can hardly tell it's aftermarket until you really get on the go pedal. This kit was everything I was looking for. 10/10 would recommend.Helpful (6)
July 15, 2018
This Cat-Back is awesome. Just so easy to install and the sound is just perfect. Not too loud inside or out but the rumble is there for sure. Removed sound tube and plugged the hole. Did not need that anymore after putting on the Magnaflow.Helpful (14)
I am looking for a upgrade to make factory exhaust and I like both this Magnaflow Street cat-back and the American Thunder cat-back which system would give me a nice deep tone while keeping the system on the quite side, and which one is quieter?
Both of the exhausts will be similar in overall volume, and the Magnaflow Street cat-back would make a great choice if you are looking for a nice deep tone without making it too loud.
is this exhaust 50 state drive by noise legal?
Unfortunately, this Magnaflow catback exhaust system is not going to be 50 state drive by noise legal. We do recommend checking with your local shops/laws to see what exhaust systems would be allowable.
Is this system quitter than the stock exhaust?
This exhaust is going to be an increase in sound over the stock exhaust.
Maybe i should have asked my last question a different way. What long tube catted headers will fit the magnaflow street system? I want to use stainless works. Any ideas?
The Magnaflow Street Cat-Back Exhaust will work with the Stainless Works Catted Long tube Headers.
is the part number the same for the convertible as the fastback ? my mustang: 2016 GT Convertible.
The Magnaflow Street Cat-Back Exhaust will have the same part number for both models yes.
The Magnaflow Street Cat-Back Exhaust would be quieter than the MBRP race cat-back yes.
The Magnaflow Street Cat-Back Exhaust installs after all OEM emissions equipment, making this exempt from CARB standards.
Our customers report little to no drone with the Magnaflow Street Cat-Back Exhaust at highway speeds.
The Magnaflow Street Cat-Back Exhaust Fits All 2015-2017 GT Mustangs, Including Fastback and Convertible.
You will have less of an issue, but Magnaflow doesn't exactly delete the drone entirely. The window of RPM's of which you experience that drone will likely be smaller.
A new tune is not required when adding this exhaust, nor will it cause a check engine light.
The Roush Axle-Back Exhaust, item # 387039, (https://www.americanmuscle.com/roush-axleback-2015gt.html) is specifically designed to bolt to the factory location. We cannot guarantee it will work with the piping on the Magnaflow Street Cat-Back Exhaust.
We would only recommend using the Magnaflow Street Cat-Back Exhaust in combination with other Magnaflow products. That is the only way we can definitely guarantee fitment.
Unfortunately we do not carry the mufflers included in the Magnaflow Street Cat-Back Exhaust separately.
(approx) 2 Hours
Light to Moderate mechanical skill required.
What's in the Box
|Piping Material:||Stainless Steel||Tip Material :||Polished Stainless Steel|
|Piping Size:||3"||Tip Size:||4.5"|
|Muffler Type:||Straight-through||Fitment:||2015-2017 GT|