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Stainless Works Catted Downpipe - Factory Connect (15-19 2.7L/3.5L EcoBoost F-150, Excluding Raptor & 2019 F-150 Limited)

Market Price $1,104.63 You Save 12% ($127.08)
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  • Item T528035

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    Features, Video & Details

    • Stainless Works Catted Downpipe
    • Increases Rear Wheel Horsepower and Torque
    • 304 Stainless Steel Construction
    • Free Flowing 3 in. Diameter Tubing
    • More Aggressive Sound Compared to Stock
    • High Flow Catalytic Converters
    • Fits All 2015-2019 2.7L/3.5L EcoBoost F-150s, Excluding Raptor

    Review & Installation Video

    Review & Install Video

    More Horsepower and Torque. If you feel your turbocharged EcoBoost F-150 needs more power to pass the slower traffic on the highway or tow your race car to the track, then look no further than the Stainless Works Catted Downpipe. Featuring high flow catalytic converters, this downpipe completely replaces your factory downpipe and power robbing catalytic converters. By relieving some of the restrictions around the turbos and reducing back pressure, it increases your exhaust flow which will result in more horsepower and torque. Not only will this increase your performance, it also adds an aggressive exhaust note to your rig, when compared to the stock down pipe.

    Stainless Steel Construction. Stainless Works constructs this Catted Downpipe from 3 in. diameter T304 stainless steel tubing for its strength and superior corrosion resistance. This Downpipe is also mandrel bent to provide superior airflow, so there are no kinks to rob you of power.

    Required Upgrade. For proper operation and maximum power potential this Downpipe will require reprogramming the vehicles computer. AmericanMuscle recommends a custom tune with a F-150 Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. This Stainless Works 3 in. Catted Downpipe is specifically designed to fit the 2015-2019 F-150 equipped with the 2.7L or 3.5L EcoBoost engine with either a factory catback or an aftermarket catback utilizing the factory connection. It is not compatible on the Raptor models.

    Technical Note. This Stainless Works product is not legal for use in California or other states adopting California emission standards.

    Fitment: 2015 2016 2017 2018 2019 Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Catted Downpipe
    Installation Info
    Tech Specs
    Down Pipe Specifications
    Piping Material: Stainless Steel Piping Size: 3"
    Catalytic Converter: "Yes" Type Cat-Back Required: Factory Connect
    Fitment: 2015-2017 2.7L/3.5L EcoBoost
    Will it fit my F-150?

      Customer Photos

        Questions & Answers (8)

        5 Top Rated Questions

        After I install the downpipe, will I have a check engine light come on? Do I have to purchase a tuner?

        • To have this downpipe correctly used, you will need a tuner a recalibrate the vehicle so that the check engine light does not come on.

        Helpful (1)


        • The included tune would not be compatible with the high flow cats on this pipe. 

        Helpful (0)

        I have the Sct tuner and I got a tune from mpt and they said they won't give a tune to keep the check engine light from coming on, so where can I get the tune for the check engine light?

        • Most tuning companies will not create tunes to delete check engine lights as this violates Federal law/EPA regulations, and there has been considerably more enforcement of these recently.

        Helpful (0)

        Where can you get the custom tune so the check engine won't come on?

        • From my understanding, you would need a custom dyno tune.

        Helpful (0)

        Hi, I’m interested in the Stainless Works Catted downpipes for my F150, but I don’t want to jeopardize the street legality of my truck. In your video you state that the pipes are DOT and CARB approved (12:10 mark in the video) but in the text it says that they are not legal in California and in the questions it says that, even with a custom tune, they might throw a CEL code for inefficient cat. So what exactly is the legal status of these pipes. ( I do not live in California so I don’t care what they do there.)

        • These Downpipes are NOT CARB compliant. Tuning and Emissions: these downpipes will require custom tuning for proper operation and power gains, and they may not meet emissions requirements in your area.

        Helpful (0)
        Post Your Question
        3 More Questions
        I'm curious about the reprogramming, I have the SCT SF4/X4 power flash tuner with 4 customs tunes for my 2016 ford f150 with the 2.7 ecoboost. I cant find a recalibrate feature. Do I just redownload my custom tune and that will keep my check engine light form coming on or is there something else I am supposed to do to keep this from happening? Please advise 1 answer
        I currently have the MBRP Black Series 3 in. Dual Exhaust System - Middle Side Exit installed on my '16 2.7L F-150. It mentions in the technical notes about the factory connect. I want clarification on this connection/piece seeing I got rid of my factory exhaust. Thank you. 1 answer
        Hello, I have a 2016 Ford F150 2.7 ecoboost. I already have a 4" mangaflow cat back exhaust on it, I was just wondering if this downpipe will be to much air flow for this 2.7 ecoboost engine? Thank you for your time. 1 answer

          Customer Reviews (4) Write a Review

          Overall Rating 3.5

          out of 5 stars

          Installation Time:Full Day

          Installation Cost:$100-$250

          • Loudness / Volume 4.5 4.5
          • Exhaust Note 4.75 4.8
          • Fit & Finish 4.5 4.5
          • Bang For Your Buck 4.75 4.8

          • 5/5

            Installation Time: Afternoon

            May 30, 2019

            Awesome down pipes

            They look amazing. The flange on drivers side dont fit well so make sure you have high temp permatex. The performance gains with this and a tune are phenominal. Truck is legit quick now. I def reccomend this but do it with stock catbacks the ecoboost sound s ricey with a aftermarket cat back


            Year: 2018 Submodel: XLT Engine: 3.5L V6 Ecoboost

            Helpful (0)

          • 1/5

            Installation Time: Afternoon

            December 02, 2018

            Poor maf hole drilling

            After installation, had to remove bc the maf holes did not line up with threads syncs the threads were only half way drilled on one hole. Had to re tap all holes and grind out the misalignment just to get the maf started in the threads. Took longer to fix the shoddy craftsmanship than to install.


            Year: 2019 Engine: 3.5L V6 Ecoboost

            Helpful (11)

          • 3/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            July 05, 2017


            Very happy with the item Did now that my engine light would turn on u should tell customers before they buy it


            Year: 2017 Engine: 2.7L V6 Ecoboost

            Helpful (22)

          • 5/5

            Installation Time: Afternoon

            June 24, 2016

            It's almost perfect

            This catted downpipe is great but the only issue I had to deal with was I needed a seal at the flange for the catback connection. But I easily made one. Along with complementing my catback exhaust and power numbers it really screams and runs great


            Helpful (15)

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