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MBRP 3 in. Catted Downpipe (15-20 EcoBoost)

Item 398091
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Market Price $515.99 You Save 12% ($61.00)
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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
    • Custom Tuning is Required
    • Designed to be used with a 2.25 in. Cat-Back Exhaust
    • Fits 2015-2020 2.3L EcoBoost Mustangs

    Review & Installation Video

    Review & Install Video

    Improves Power and Performance. Uncork the hidden power of your 2015-2020 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 Is 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 is 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 2015-2020 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 2020 Details

    MPN# FGS017

    CA Residents: WARNING: Cancer and Reproductive Harm -

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

      Customer Photos (2) Submit Your Photo

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        Questions & Answers (12)

        5 Top Rated Questions

        Will this downpipe be compatible with the “MBRP XP Series Cat-Back Exhaust w/ Y-Pipe - Race Version (15-19 EcoBoost Fastback w/o Active Exhaust”?

        • Yes, this downpipe is compatible with the MBRP XP Series Cat-Back Exhaust w/ Y-Pipe - Race Version, item #389214.

        Helpful (1)

        Will this fit on with the flowmaster american thunder catback exhaust?

        • This can be used with any 2.25" catback exhaust.

        Helpful (0)

        Could this be used with the roush y pipe and active exhaust?

        • This will work with any cat-back exhaust with a 2.25 in. diameter tubing.

        Helpful (0)

        Will it make the check engine code come on

        • Yes, your light will come on, and you need custom tuning to install this on your vehicle.

        Helpful (0)

        Will this fit a stock 2018 mustang ecoboost exhaust???

        • MBRP designed their Down Pipe to be a direct bolt-on upgrade replacement for your Mustang's factory down pipe. This can installed with your factory exhaust system and most aftermarket exhausts.

        Helpful (0)
        Post Your Question
        7 More Questions
        Will this downpipe work with the ford performance pro cal tune? 1 answer
        Will this work with the Ford pro-cal tune and cold air intake? 1 answer
        Will this pass emissions? 1 answer
        What tune recommend for this downpipe, and works with 91 octane ??? 1 answer
        What happens if i installed without a tune? And also i have the borla cat back exhaust is compatible???? 1 answer
        About how much power would this add to a tune only ecoboost? (Unleashed 93) 1 answer
        I have installed the MBRP XP Series Cat-Back Exhaust w/ Y-Pipe - Race Version (15-19 EcoBoost Fastback w/o Active Exhaust..., so how does this downpipe connect to the 3" tube? Description states fitment to 2.25" stock pipes 1 answer

          Customer Reviews (4) Write a Review

          Overall Rating 5

          out of 5 stars

          Installation Time:Afternoon

          • Loudness / Volume 4.25 4.3
          • Exhaust Note 5 5
          • Fit & Finish 4.75 4.8
          • Bang For Your Buck 4.75 4.8

          • 5/5

            Installation Time: Less than 1 Hour

            August 28, 2019

            Great Sound

            Burble (not pop but more like a rumble, I don't know the name) sounds. Much deeper and louder. Pretty easy install, amazing results. I let my buddy drive it and couldn't stop smiling as I heard it drive away. End of the day, it is still an Ecoboost so the loudness isn't insane, but it sounds much better in my opinion.


            Year: 2017 Submodel: EcoBoost

            Helpful (3)

          • 5/5

            Installation Time: Afternoon

            August 09, 2019

            MBRP downpipe

            MBRP is amazing as we all know, I did a muffler delete for a little more volume initially, but switching out the stock downpipe for the MBRP one makes me wonder why I didn’t do that first! This thing is very bold and adds a deeper, much more aggressive note with more “popping” I still use the factory resonator to help “tame” the loudness a little but if you don’t want to pay the money for a full turbo back exhaust, do the muffler delete and add this bad boy, they will definitely hear you coming! Definitely noticed a better throttle response, some higher end torque gains but definitely get yourself a tune if you have the money!


            Year: 2018 Submodel: EcoBoost

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            July 28, 2019

            The Downpipe For All

            This will do exactly what you want, increase your exhaust note to make is sound meatier than just an EcoBoost. This easy plug-n-play pipe fits perfectly.


            Year: 2017 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Afternoon

            June 20, 2019


            Def helped with sound and hp!! Great add must have if you get exhaust !!


            Year: 2015 Submodel: EcoBoost

            Helpful (2)

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