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Kooks Performance Catted Downpipe (15-20 EcoBoost)

Item 387102
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    Features, Video & Details

    • Kooks Catted Performance Down Pipe
    • Increases Rear Wheel Horsepower and Torque
    • High Flow Catalytic Converters
    • 304 Stainless Steel Construction
    • Free Flowing 3" Mandrel-Bent Tubing
    • More Aggressive Sound Compared to Stock
    • A Custom Tune is Highly Recommended for Operation
    • Is NOT CARB Certified
    • Fits 2015-2020 EcoBoost Mustangs

    Review & Installation Video

    Review & Install Video

    Justin: What's up, guys? Justin with, Paul from the Bama performance team, we're down in North Carolina visiting our friends from Kooks Performance with their 2015 EcoBoost here. We were hanging out at their shop yesterday. They hooked us up with their 3 inch competition downpipe, full cat-back exhaust. I mean this thing sounds great. Laying down some really good numbers on the Dyno.Last time we showed you guys this car, it was making 283 horsepower, 342 pound-feet of torque. With the new parts installed, it's now making 308 and 379. That's a difference of 25 horsepower, 37 pound-feet of torque.We're here at the strip to test it out a little bit. Now, Paul, last time at the track, we went a best of 12.9. We're at an eighth mile track. It's all we can find down here. I mean can we still compare these numbers and see how the car's going to do?Paul: Yeah, we can see what the car's doing in the eighth mile, then really extrapolate the data from the back half of the track to get a rough idea of what's going on. Again, we're here to really test the parts. You do have that front mount intercooler on the car with the up pipe kit. A lot of it is going to be just collecting some data and going from there.It went into overboost mode. It's walking that fine line of how much boost do we want to make versus what our tolerance is within the computer to protect the motor.Male Voice: I'm going to try to manually shift it. It was shifting real short from first to second, so I'm going to manually shift this one and see what it does. Hopefully, if it'll hold boost, it'll haul ass.Justin: All right, Paul. The car made its first initial passes, did pretty well, then we let it cool down a little bit. You made some tweaks, and it went even faster.Paul: Yeah. Again, like I say all the time, I love going back and looking at the data. I made a couple of tune adjustments really focusing on the shift points, again also for the downpipe and picked up almost another tenth going 7.90s. The car ended up going 7.71 at 89 miles an hour. Obviously, we were able to use that E.T. and mile an hour, go to an online calculator, and punch it in. It turns out to about a 12.1 E.T. So, overall, extremely happy with the results.Justin: That is hauling you know what. I think even more impressive, guys, is the fact that this thing is cutting 1.50 sixty-foots basically stock suspension and a radial, right.Paul: Yeah, 1.59 60-foot on a 19 inch drag radial bone stock suspension out of a little turbo 4 banger. That's really impressive.eJustin: Yeah, absolutely. We can not thank our friends over at Kooks enough. I mean they hooked us up with a killer 3 inch competition downpipe, the cat-back system. The car picked up over 25 wheel horsepower and over 30 pound-feet of torque, no tune adjustments whatsoever. That's just pretty much the parts doing what they're designed to do.Again, big shout out to our friends over at Kooks. We had a great time. Thanks for the hospitality. We've enjoyed this nice, sunny North Carolina weather, but now it's time to head home.Guys, keep an eye out for more EcoBoost videos coming your way very soon. Something tells me we are not done modding this car. Again, subscribe to your YouTube channel, American Muscle Videos, and for all things Mustang, keep it right here at

    Increase Power and Performance. Add even more horsepower and torque to the rear wheels of your EcoBoost powered Mustang by installing a Kooks Performance Catted Down Pipe. The Kooks Catted Down Pipe features a high flow race catalytic converter to increase the overall performance of your S550 Mustang.

    More Aggressive Sound.
    Kooks Performance Down Pipe not only helps increase power and performance, but it also adds a much more aggressive exhaust note to your S550 EcoBoost Mustang, when compared to the factory down pipe.

    Stainless Steel Construction. Constructed from 3" diameter free-flowing mandrel bent 304 Stainless Steel tubing for superior strength and corrosion resistance, this Kooks Performance Down Pipe will improve exhaust flow for more power.

    Recommended Upgrade. To realize the full power potential that this Down Pipe has to offer, Kooks highly recommends a custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation, optimal performance and drive-ability.

    Application. This Kooks 3" Performance Catted Down Pipe is designed to fit 2015-2020 EcoBoost Mustangs. This Kooks 3" Down Pipe can be install with a matching Kooks 3" Cat-Back or the factory 2.25" exhaust with the use of an optional Down Pipe Adapter (see options listed above).

    Fitment: 2015 2016 2017 2018 2019 2020 Details

    MPN# 11533200

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Catted Down Pipe
    Installation Info
    Tech Specs
    Down Pipe Specifications
    Piping Material:304 Stainless SteelPiping Size:3"
    Catalytic Converter:Yes - IncludedFitment:2015-2017 EcoBoost
    Will it fit my Mustang?

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          Customer Reviews (2) Write a Review

          Overall Rating 3

          out of 5 stars

          Installation Time:Afternoon

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

          • 1/5

            July 06, 2016

            Kooks cated 3" down pipe

            Went together easy. But There were no bolts to attach to bracket in kit. Stock pipe had studs welded to bracket. Next issue was top pipe not bent properly under bent and pipe hangs down 3" below stock position and thats after I put a jack under it to get it pushed up so it wont drag on the ground. I now have 3.5" ground clearance. Not happy with fitment of product. What's the return policy?


            Year: 2016 Submodel: Ecoboost

            Helpful (16)

          • 5/5

            Installation Time: Afternoon

            May 29, 2016

            Sounds Way Better than Stock

            I installed the Kooks Catted Downpipe with the Kooks Cat Back System. The sound is much louder and deeper than stock. After doing some research on how many of the downpipes throw a CEL I was happy to find that so far it has not been an issue. The car also feels a bit stronger with the new setup.


            Year: 2016 Submodel: Ecoboost

            Helpful (11)

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