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MBRP 3 in. Down Pipe - Catted (15-19 EcoBoost)

Market Price $492.99 You Save 12% ($58.00)
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$434.99 (each)

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  • Item 398091

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    Features, Video & Details

    • Improves Rear Wheel Torque and Horsepower
    • Creates a Bold Exhaust Tone
    • High Flow Catalytic Converter Included
    • 3 inch Catted Down Pipe
    • Stainless Steel Mandrel-Bent Tubing
    • Direct Replacement for OEM Pipe
    • Limited Warranty
    • Is NOT CARB Certified
    • Designed to be used with a 2.25 in. Cat-Back Exhaust
    • Fits 2015-2019 2.3L EcoBoost Mustangs

    Review & Installation Video

    Review & Install Video

    Improves Power and Performance. Uncork the hidden power of your 2015-2019 EcoBoost Mustang by upgrading to a MBRP 3 inch Catted Down Pipe. The innovative design and high flow catalytic converter will effectively improve exhaust flow for an increase in rear wheel horsepower and torque.

    Bold Exhaust Tone. Besides improving the power and performance of your EcoBoost Mustang, this MBRP Down Pipe will improve your Pony's sound as well. Because of the Pipes larger diameter, you will gain a much bolder exhaust note when compared to the original factory down pipe.

    Durable Construction. MBRP uses only the highest quality materials to manufacture their products. You can trust the quality and craftsmanship of this catted down pipe as it is made from mandrel bent 3 inch stainless steel tubing to ensure extra durability. This Downpipe features two standard O2 fittings for both upstream and downstream O2 sensors.

    Direct Bolt-On Installation. MBRP designed their Down Pipe to be a direct bolt-on upgrade replacement for your Mustang's factory down pipe. There is no cutting or extra modifications required. Installation of this new Down Pipe can be completed in about a three hours with just basic hand tools.

    Custom Tune May Be Required. This Downpipe was designed to improve the performance of your Mustang without the need of reprogramming your computer. However, depending on the vehicle's stock rear O2 sensors, a custom tune with a Handheld Tuner may be required. By reprogramming the vehicles computer (ECU) you will get the best possible power and performance increases from this Down Pipe.

    Not CARB Certified. This Downpipe is not CARB certified, therefore it is not legal for use in California or any other state adopting California emission standards. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

    Limited Warranty. MBRP offers customers a limited warranty which covers manufacturing defects in material and workmanship. Some exclusions may apply, please see manufacturer's warranty for details.

    Application. This MBRP Catted 3" Down Pipe is specifically designed to fit 2015-2019 EcoBoost Mustangs equipped with the turbocharged 2.3L in-line 4-cylinder engine and a 2.25 inch cat-back exhaust system.

    Fitment: 2015 2016 2017 2018 2019 Details

    MPN# FGS017

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Catted Downpipe
    • Mounting Hardware
    • Installation Instructions
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (15)

    5 Top Rated Questions

    I just ordered the MBRP Race catback and decided to get the MBRP Catted Downpipe with it because the black friday price was too good to pass up. I do not have a tuner yet and might not be able to get one for a few months, is it safe to run the Down pipe and catback on a stock tune for a long period of time? The only other mod is a BOV adapter.

    • A tune is certainly not required with the install of this MBRP 3 inch Down Pipe so it would indeed be safe to drive the Mustang without the tune.

    Helpful (2)

    Hi, I have a 2015 Mustang Ecoboost and I am planning on ordering the MBRP XP Street Exhaust early next month. I want to keep the same manufacturer going all the way through the exhaust system, so I am now looking at the MBRP catted downpipe. Do these products fit directly to each other as well as with the factory hook ups? Are there any extra parts or adaptors needed or is everything that will be needed for install included with the purchase of these two products? The goal is to have everything ready for my mechanic on the day of install? Thank you!

    • The MBRP 3 in. Down Pipe would hook up very nicely with the MBRP XP series cat-back and would not require anything else for the install.

    Helpful (1)

    will this go good with a ford performance pro cal tune, or will it make my power decrease?

    • This will work with that tuner and would not decrease power.

    Helpful (0)

    will the down pipe show performance gains without a tune? will the down pipe cause my 2017 mustang ecoboost to lose power when paired with a MBRP cat back without a tune or will it improve performance?

    • This will provide power with out a tune and on the cat-back just not as much as it would with a tune.

    Helpful (0)

    Hey, I have a borla atak catback exhaust system on my eco boost, would this fit directly onto that or would I need some sort of adapter

    • The MBRP 3 in. Down Pipe will connect directly to your Borla Atak Cat-Back exhaust.

    Helpful (0)
    Post Your Question
    10 More Questions
    I know you all have said this downpipe does not need a tune, but if I did use a tune would it show any gains? 1 answer
    I currently run a flow.aster outlaw axle back and a flowmaster scavenger y pipe. The y pipe is 2.25 diameter. Since the step down diameter is also 2.25 will they match up together? Or will i need to modify anything to make them fot perfectly? 1 answer
    HI, Im getting conflicting responses Dealing with the tuning factors. My question pertains to an actual tune after the installation of this down pipe. Is it necessary? Im running a XP MBRP race edition cat back at the moment. First off, will it fit without adapters? Secondly, will my 2017 ecoboost need a tune after I add this product? I just need clarification. I don't want to tune at the moment, but I would like to add this down pipe if possible without tuning. I have herd that it depends on the rear O2 sensor and year model of the Mustang.. 1 answer
    Can I pair this downpipe with roush ankle-backs, roush intake and MRT y pipe?? I’m running no tune!!!! 1 answer
    Will it pass emissions in Texas ? 1 answer
    Does this item pass emissions? Will it work with a magnaflow competition catback exhaust? 1 answer
    Will this fit a Borla ATAK Catback installed on my Stang? 1 answer
    Will this pass state inspection 1 answer
    Will this work well with the MBRP race cat-back Exhaust? 1 answer
    Does this downpipe require to be calibrated to the car's ECU? 1 answer

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    Customer Reviews (11) Write a Review

    Overall Rating 4.3

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:0-$100

    • Loudness / Volume 4.181818 4.2
    • Exhaust Note 4.636364 4.6
    • Fit & Finish 4.454545 4.5
    • Bang For Your Buck 4.363636 4.4

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      February 13, 2019

      MBRP 3 inch Catted downpipe.

      I already had the MBRP 3 inch cat back with the race mufflers. So I wanted to complete the system with the catted downpipe. It dose make a difference. Stand in it and things get going very quickly! It's a bit louder than before. But not to droney around town. I like it.


      Year: 2018 Submodel: EcoBoost

      Helpful (0)

    • 4/5

      Installation Time: Afternoon

      November 04, 2018

      Great sound, slight issue

      The pipe did exactly what I wanted it to, opened up the exhaust giving me more noise and performance. The sound of the turbo is amazing. Only negative I have found is the braided portion hangs down an extra inch or two than the stock pipe which causes scraping on speed bumps at stock height. If you lower the car be careful, I've already broken a few strand on the braid.


      Year: 2016 Submodel: EcoBoost

      Helpful (3)

    • 1/5

      Installation Time: Afternoon

      October 28, 2018

      Check engine light on

      Easy install, sounds great, but check engine light is on now. I have a tune but it doesn't solve the light issue. Called American Muscle and they said there's nothing they can do. They no longer remove check engine lights with a tune. This should be in the listing. If I knew this I probably wouldn't have bought it. And I may have saved myself some money and bought the catless downpipe if I knew the cat pipe wont even pass smog checks. Not with the light on anyways. I asked to return it and they said no since it's been installed. Bottom line is they shouldn't be selling parts that don't work properly with your car.


      Year: 2018 Submodel: EcoBoost

      Helpful (4)

    • 4/5

      Installation Time: Afternoon

      September 21, 2018

      Good sound

      Quality product but still throws a cel for the cat and had cutting oil inside the pipe but all in all it did exactly what i wanted also make sure u soak the turbo studs in some pb blaster so u dont end up un screwing the stud


      Year: 2015 Submodel: EcoBoost

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      September 20, 2018

      Great mod

      Just added this on, with the FP Borla Sport exhuast and FP cai and tune already on. May only open up the sound with a stock exhaust, but with the Borla....WOW, very nice sound with combo, can be a little loud when you get on it, but still hardly any cabin noise nor drone at cruising. Had my Ford shop install, took about an hour.


      Year: 2017 Submodel: EcoBoost

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      September 13, 2018

      3" downpipe

      Great product , install was easy with a hoist , results are very noticible . car has alot more snap now .Should have put this dowwnpie on sooner


      Year: 2017 Submodel: EcoBoost

      Helpful (1)

    • 3/5

      Installation Time: Afternoon

      September 12, 2018


      The install itself is not bad. My only issue is that the braided section of the pipe rests up against the frame. No matter how I adjust the sections. I left all the bolts loose and moved the pipe away from the frame but as you tighten the assembly it wants to move to the frame. Cant win. With almost all of the aftermarket parts I installed on my 2018 6 speed there is a fit problem and I have to fight to make all of them work. One good thing is that no banging noises or excessive vibration is taking place. No exhaust leeks and the turbo spools up much quicker. Nice! Of course the good old CEL had to occur which by the way should be advertised more clearly in the promotion of this product. And you know MBRP could of included an Oxygen Sensor extender for an extra $10.00 so you can complete the job all in one swoop. I found a Vibrant 11619 J-Style Oxygen Sensor Restrictor for $35.00 and it solved that issue. Thanks MBRP. All in all I like the product I just cant give it higher marks because of fit issues.


      Year: 2018 Submodel: EcoBoost

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      July 19, 2018


      I ordered the MBRP catted Down pipe to finish my exhaust on my 2018 mustang ecoboost. I already installed the XP series MBRP race catback months ago but it just needed a little more noise to wake the neighbors. It took about an hour to install with a floor jack. It fit perfectly and sounds alot louder with more turbo noise. It shipped quickly and made it to alaska in only 2 days which is amazing. 10/10 would recommend!


      Year: 2018 Submodel: EcoBoost

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      May 27, 2018

      Easy Install

      Definetly pairs well with the MRBR race inch exhaust. Most people don't believe its a 4 cylinder. Buddy of mine installed this plus the race exhaust on jacks in about two hours... he's also 17.


      Year: 2017 Submodel: EcoBoost

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      May 08, 2018


      the sound difference was incredible the performance is awesome


      Year: 2015 Submodel: EcoBoost

      Helpful (8)

    • 5/5

      Installation Time: Afternoon

      September 17, 2017


      Easy install only took me 2 hours with a jack and stand. Performance is great with a tune my car runs a lot better


      Year: 2017 Submodel: EcoBoost

      Helpful (7)

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