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BBK Down Pipe - Catted (15-19 EcoBoost)

Market Price $565.99 You Save 12% ($66.00)
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  • Item 389776
  • MPN# 1809

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    Features, Video & Details

    • High Performance Catted Down Pipe
    • 3" CNC Mandrel-Bent Tubing (Steps Down to 2.25"
    • Aluminized Steel Construction
    • High Flow Catalytic Converter
    • Aggressive Exhaust Note
    • Direct Fit Replacement
    • NO Computer Tune Required, but is Recommended
    • Is NOT CARB Certified
    • Compatible with Factory or Aftermarket Cat-Back
    • Fits 2015-2019 2.3L EcoBoost Mustangs

    Review & Installation Video

    Review & Install Video

    Hey guys, Stephanie with here with this BBK down pipe that's available for all 2015 and up EcoBoost Mustangs. The BBK downpipe is going to be for the EcoBoost owners who are looking for a budget-friendly way to upgrade that restrictive factory downpipe, but with a catted downpipe that allows for a factory or factory-like cat-back setup. The whole point of an aftermarket down pipe is to relieve some of the restriction around the turbo because it is really pretty constricted. Opening up some of the airflow from the turbo can give some nice performance improvements. Basically, when it comes to the turbo, if you're looking for performance, you're pretty much going to want airflow as unrestricted as possible so the turbo can spool quickly.The faster the turbo can spool, the more gains you'll see. So this down pipe that we have here today is catted, but if you're looking to get around that, BBK does offer a downpipe that comes non-catted that's going to cost a little bit less than the catted version here which is typical to see on all exhausts. But looking at this one closer, it is a full three inch mandrel bent pipe with a step down. The step down's going to reduce the three inch down to a two and a quarter inch which leaves the option of keeping a stock cat-back or running an aftermarket two and a quarter inch one. That's one of the nice things about this downpipe. You can pick up the downpipe for some performance gains without having to purchase a complete new cat-back while you're at it unless you want to. Now, three inch is going to be larger than the factory downpipe which is where the less restriction portion of what I've been saying comes from, and if you pick up the uncatted version of this down pipe, then that's going to be even less restrictive. But even the catted version has a high flow cat which is more free flowing than the factory cat is. This option from BBK is made from aluminized steel and like I said before, it's C&C mandrel bent which helps with smoother airflow. So even though the main idea behind an aftermarket downpipe is to help give the turbo unhindered airflow, swapping out your factory downpipe's also going to give you more sound too, especially if you're running the uncatted version. Speaking of going with an off-road version, keep in mind that a new tune will be required since you are eliminating that cat, and it's going to be necessary to tune for that. Even if you are going with the catted version, while a tune isn't necessarily required, it is recommended, especially if you want to be able to realize the full power potential behind upgrading your downpipe. This downpipe is currently the least expensive downpipe that you can get for your EcoBoost but not by a whole lot. It's about 50 to 60 bucks less than the top of the line, and guys like Cook's and Stainless works. So that's just a little food for thought. The catted version costs right around $500, and the off-road version is $100 less. When it comes to the install, luckily this isn't a bad one. You're probably looking at a few hours to get everything done, and I'm going to call this a one out of three wrenches on the scale. This is obviously going to be easier to do on a lift, but, of course, you can get the job done using a jack and stand if you don't have access to one. You won't need anything out of the ordinary, just a few sockets, wrenches and a short extension. You are going to be removing the front and rear 02s for the install, so I'd just make sure to unclip those before you remove or reinstall them so you aren't twisting the wires. Of course, don't forget to make sure to grab the factory downpipe gasket before installing the new downpipe since sometimes that gasket can stick to the turbo. The only other thing I'd say is to line the new downpipe up first before tightening everything down, but that's about it. Only a few bolts and about two hours time for the install. So overall, the BBK down pipe is a three inch downpipe that steps down to work with the two and a quarter inch cat-back. It comes either catted or non-catted, depending on what you're looking for. Not only is this going to increase performance, but it's also going to open up some sound on the EcoBoost as well. You can check this out online more for yourself and see what you think. I'm Stephanie, and for all things Mustang, keep it right here at

    Improved RWHP and TQ. Designed as a direct fit replacement on your 2.3L EcoBoost Mustang, this BBK Catted Down Pipe offers improved rear wheel horsepower and torque as a result of its larger diameter tubing. This aluminized 3" Down Pipe also features a high flowing catalytic converter to help increase the overall performance of your turbocharged S550 Mustang.

    More Aggressive Sound. Not only will this BBK Catted Down Pipe help increase the power of your Pony, but it will also add a more aggressive exhaust note compared to the stock down pipe. Make sure everyone hears your 2015-2019 EcoBoost coming down the road with the addition of this high quality down pipe.

    Aluminized Steel Construction. Manufactured to provide maximum exhaust flow and performance, this BBK Down Pipe features 3" diameter CNC machined mandrel-bent aluminized steel tubing. Complete with a high flow catalytic converter, this Down Pipe would be a perfect fit and complement to either the stock catback or an aftermarket catback system.

    Recommended Upgrade. To realize the full power potential that this Down Pipe has to offer, AmericanMuscle highly recommends a Bama Custom Tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. The BBK 3" to 2.25" Catted Down Pipe is designed to fit all 2015-2019 EcoBoost Mustangs equipped with the turbocharged 2.3L engine. This Down Pipe can be installed with either the factory or an aftermarket 2.25" catback exhaust.

    Fitment: 2015 2016 2017 2018 2019 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Catted Downpipe
    Installation Info
    Tech Specs
    Down Pipe Specifications
    Piping Material: Aluminized Steel Piping Size: 3" (step down to 2.25")
    Catalytic Converter: "Yes" Type Cat-Back Required: Stock or 2.25" aftermarket 
    Tune Required No - but recommended Fitment: 2015-2017 EcoBoost
    Will it fit my Mustang?

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    Questions & Answers (12)

    5 Top Rated Questions

    Will this down pipe throw a CEL if you don't run a tune? I'm looking to not tune the car until at least my warranty expires.

    • The BBK down-pipe does utilize a high-flow catalytic converter which may cause a CEL due to being highly free flowing. Every vehicle reacts differently so you may or may not experience a CEL with the use of this down-pipe.

    Helpful (1)

    Will this down pipe fit factory exhaust until I upgrade my exhaust?

    • This Down Pipe can be installed with either the factory or an aftermarket 2.25" catback exhaust.

    Helpful (0)

    On my I/M Readiness it’s reading ready on the cat but won’t read the O2 sensor or O2 sensor heater. I have the catted downpipe I thought it reads those as ready with this downpipe am I wrong?

    • If you have readiness monitors reading "not ready" either the appropriate drive cycle has not been completed, or a tune is disabling the computers ability to not run those monitors.

    Helpful (0)

    Reading the other questions I gathered that you may or may not get a CEL with this DP. If you do get a CEL light what can you do to get it off? Are you able to drive with it on or will the cause something to happen? I do plan to get a tune down the road but not anytime soon.

    • If a CEL were to illuminate due to the installation of this BBK Down Pipe, it could be corrected with a tune whether it be a catalyst efficiency code or an over-boost code.

    Helpful (0)

    Will this DP pass state inspection

    • The BBK Down Pipe will pass most states inspections standards because of the cat that it contains. However, because each state has a different standard for state emissions it would be best to check in with your local state ordinances in order to verify.

    Helpful (0)
    Post Your Question
    7 More Questions
    Will I have to get this removed every time I get my car inspected, or will it pass inspection? I live in Missouri. 1 answer
    Hi, I have a flow master axel back exhaust with a Y pipe, would this still be ok to put on my car? 1 answer
    if i dont use tuning program, is engine light on or any error light on? other down pipes are required computer tune but bbk downpipe is not required computer tune. what is the different between other and bbk downpipe? 1 answer
    Is this catted downpipe California CARB legal? If not, does AM sell a CARB legal downpipe? Thanks 1 answer
    What is the shipping weight of this product? 1 answer
    I read that when you put the DP the car tends to smoke, is it true? i have Y and axel back. 1 answer
    Does this need a tune? 1 answer

    Customer Reviews (4) Write a Review

    Overall Rating 4.2

    out of 5 stars

    Installation Time:Full Day

    Installation Cost:0-$100

    • Loudness / Volume 3.75 3.8
    • Exhaust Note 4.25 4.3
    • Fit & Finish 4.25 4.3
    • Bang For Your Buck 3.5 3.5

    • 4/5

      Installation Time: Less than 1 Hour

      January 12, 2018

      Gave my EcoBoost incredible volume!!

      I love the 3-inch size of the downpipe and love that you can still use it with your stock exhaust since I only have resonator and muffler delete with 4 inch tips and it sounds amazing only issue is it threw a check engine light which sucks because I'm not protein yet so this is a great product if you're planning on getting Pro tuned or already are pro tuned!


      Year: 2016 Submodel: EcoBoost

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      June 13, 2017

      BBC Down pipe - catted

      LOUD! Glad I chose catted! These puppies let people know win you are coming or going. Bought with Borla ATAK cat backs.


      Year: 2017 Submodel: EcoBoost

      Helpful (4)

    • 3/5

      May 13, 2017

      Down pipe

      Did not really feel any difference in horse power. I even had new tune done.


      Year: 2016 Submodel: EcoBoost

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      April 09, 2016

      Great sound and power

      I like the high quality finish this product has and after it was installed it make a huge difference in the sound of my Ecoboost. I would definitely recommend this to anyone who is looking to add sound and power to your mustang.


      Year: 2016 Submodel: Ecoboost

      Helpful (4)

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