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Pypes Downpipe - Off-Road (15-19 EcoBoost)

AmericanMuscle no longer carries the Pypes Downpipe - Off-Road (15-19 EcoBoost). Please check out 2015-2019 Mustang Downpipes for an updated selection.
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Features & Details

  • Pypes Off-Road Down Pipe
  • Increases Rear Wheel Horsepower and Torque
  • Free Flowing 3" Diameter Mandrel-Bent Tubing
  • Steps Down from 3" to 2.25"
  • 16 Guage 409 Stainless Steel Construction
  • Intended For Off-Road, Track Use Only
  • Is NOT CARB Certified
  • Fits 2015-2019 EcoBoost Mustangs with 2.25" Cat-Back Exhaust
More Horsepower And Torque. Release all the hidden horse power and torque your Turbocharged 2.3L EcoBoost Mustang has to offer by replacing the restrictive stock catted down pipe with a larger diameter Pypes 3" Off-Road Down Pipe to improve exhaust flow and engine performance. Independent Dyno testing have seen gains of up to 20 horse power and 28 foot pounds of torque before tuning.

More Aggressive Sound. A Pypes Off-road Down Pipe not only helps increase the power and performance of your S550 EcoBoost Mustang, but it also adds a much more aggressive note to the sound of your exhaust, when compared to the stock catted down pipe.

High Quality Construction. Manufactured from free-flowing mandrel bent 16 gauge 409 stainless steel tubing for superior strength and corrosion resistance, this Pypes off-road down pipe steps down from a 3" diameter to a 2.5" diameter.

Required Upgrade. For proper operation and maximum power potential this Down Pipe will require reprogramming the vehicles computer. AmericanMuscle recommends a Bama custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

Application. This Pypes 3" to 2.25" Off-Road Down Pipe is specifically designed to fit the 2015-2019 EcoBoost Mustang with the factory exhaust or an aftermarket 2.25" catback system installed.

Technical notes. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

Fitment: 2015 2016 2017 2018 2019 Details

MPN# DFM80

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

What's in the Box
  • (1) Off-Road Downpipe
Installation Info
Tech Specs
Down Pipe Specifications
Piping Material: 409 Stainless Steel Piping Size: 3" (step down to 2.25")
Catalytic Converter: "No" - For off-road use only Type Cat-Back Required: Stock or 2.25" aftermarket 
Tune Required Yes Fitment: 2015-2017 EcoBoost
Will it fit my Mustang?

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Questions & Answers (18)

5 Top Rated Questions

So I have the magnaflow street catback. Would that fit good?

  • The Pypes Downpipe will fit the Magnaflow Street Catback without any issues.

Helpful (4)

Will it effect back pressure if I don’t do any other exhaust mods? Is it recommended to do other exhaust modifications along with this?

  • The Pypes Downpipe will reduce back pressure. While not needed, we typically recommend this for Mustangs with modified exhaust.

Helpful (0)

Will this Pypes downpipe fit my Borla ATAK Catback for my 2017 mustang ecoboost? thank you.

  • This will fit the Borla ATAK exhaust as it is the 2.25" piping required to work with this downpipe.

Helpful (0)

Will this fit with the FlowerMaster Y-Pipe that is also on this website? It recommends to buy together so just want to make sure.

  • The Pypes Downpipe will connect to the Flowmaster Y-Pipe.

Helpful (0)

Will this product fit the flowmaster y pipe?

  • Yes, the pypes downpipe is compatible with the flowmaster y-pipe.

Helpful (0)
Post Your Question
10 More Questions
How would you avoid check engine light ? 1 answer
Can i install this without a tune. It would only be a week without a tune. Is it absolutely required right away? 1 answer
Does the off road pipe gain more power than the one with the cat on it 1 answer
Will this fit the MBRP race catback ? 1 answer
I did not do any research when I first bought my car and put an axle back exhaust on it. Now, I want to make it faster. Will I need to replace my exhaust with a cat back system to unleash the full potential of his downpipe? What are your recommendations? 1 answer
This requires a tune, what would be the best for performance between a standard 93 octane tune, unleashed tune, or a custom dyno tune in your opinion? 1 answer
Is this downpipe compatible with the flowmaster outlaw series axle-back exhaust system I currently have installed on my ecoboost? Or will I have to buy some sort of adapter? 1 answer
Is it normal for the car not to produce much boost without a tune after installation? 1 answer
Besides price what is the difference in the pypes downpipes verses the other higher downpipes? 1 answer
When installing this downpipe on my ecoboost, should I use anti-seize on the two sensors? 1 answer

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Customer Reviews (22) Write a Review

Overall Rating 4

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 4.523809 4.5
  • Exhaust Note 4.571429 4.6
  • Fit & Finish 4.047619 4.0
  • Bang For Your Buck 4.857143 4.9



  • 1/5

    June 16, 2018

    Johnny Johnson

    Can't use it because I can't find a held hand tuner for my 2018 automatic EcoBoost Mustang and there's no tuners around my head that contain it so I didn't put it on

    JohnnyJ

    Year: 2018 Submodel: EcoBoost

    Helpful (6)

  • 4/5

    Installation Time: Less than 1 Hour

    June 14, 2018

    Good downpipe

    Way louder then the stock downpipe. A little boost in performance. I’m still waiting on my tuner to come in. Which should enhance the performance of the downpipe even more so. I took it to a local shop. Cost $150 for the install. I’m happy with my purchase.

    StephenM

    Year: 2017 Submodel: EcoBoost

    Helpful (2)

  • 1/5

    Installation Time: Less than 1 Hour

    June 08, 2018

    Broke after a few months..

    This downpipe was awesome for a few months until it randomly blew a hole on the side of itself right where it bends out of the turbo..

    ErnieL

    Year: 2017 Submodel: EcoBoost

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    May 01, 2018

    This is a must have Mod

    I put this on in literally 30 min. Not hard at all. Once installed you can feel the increase in power and paired with my custom tune my car is a whole different car.

    AveryW

    Year: 2017 Submodel: EcoBoost

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    April 30, 2018

    Great sound!

    When you pair this with a cat back, it sounds amazing!

    BryanM

    Year: 2017 Submodel: EcoBoost

    Helpful (2)

  • 4/5

    March 06, 2018

    It awesome

    It hard install take me 2 day with my friend. Sound amazing and it'll make pop sound if you have straight pipe. I can hear in the my car and feel. Sometime you can hear pop sound in the car.

    Savages

    Year: 2015 Submodel: EcoBoost

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    February 09, 2018

    Loud

    I like it... I have a Gibson catback exhaust and the sound is more pronounced after installing the downpipe...you can here it even if the windows are up... easy to install not that difficult on jack stands

    JDee

    Year: 2017 Submodel: EcoBoost

    Helpful (6)

  • 5/5

    Installation Time: Afternoon

    November 01, 2017

    dude..

    Okay so for my ecoboost, first off, this downpipe really opens the airway if you're looking to mod. DO NOT look past a downpipe. Trust me! a lot of unlocked hp when you're full bolt on. Second, OH MY GOD IS THIS THING RIDICULOUSLY LOUD. the only thing that will upset you by buying this is your ruined relationship with your neighbors haha.

    Herc

    Year: 2016 Submodel: EcoBoost

    Helpful (5)

  • 5/5

    Installation Time: Less than 1 Hour

    October 16, 2017

    Great

    Pretty good, got it going down into a 3 inch single exhaust straight pipe, pretty loud, hopefully the cai makes it sound more better

    EcoBeast

    Year: 2016 Submodel: EcoBoost

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    August 25, 2017

    Beast pipe

    It's a downpipe of wonders giving you the xtra torque and Horsepower you need and giving you the full Benicia of a tune highly recommend. Takes less than an hour to install

    ArianC

    Year: 2017 Submodel: EcoBoost

    Helpful (2)

  • 4/5

    Installation Time: Less than 1 Hour

    August 10, 2017

    Bang for your buck

    Fitment was great besides the hanger... can feel the slight difference in power, overall a great product. Recommended

    MalachiP

    Year: 2017 Submodel: EcoBoost

    Helpful (2)

  • 4/5

    Installation Time: Less than 1 Hour

    August 09, 2017

    Great

    Very great product fits like a glove. Sounds very nice would recommend

    MauricioT

    Year: 2016 Submodel: EcoBoost

    Helpful (3)

  • 4/5

    Installation Time: Less than 1 Hour

    August 07, 2017

    Decent power

    Took about 30 mins to install, With the help of a buddy. Made the turbo a little louder but nothing crazy. Little power gains overall good product!! Recommended

    MalachiP

    Year: 2017 Submodel: EcoBoost

    Helpful (2)

  • 3/5

    Installation Time: Afternoon

    July 29, 2017

    Bracket broke

    Product is sort of hard to fit, it's doable but it's not perfect. The main bracket is not positioned correctly and actually broke off leaving a giant hole in my downpipe. My exhaust shop had to patch it up, this downpipe needs some work done to it but for the price I guess it's worth it. If you get a weird exhaust tone out of nowhere check to see if the bracket broke off.

    Ryan

    Year: 2016 Submodel: EcoBoost

    Helpful (2)

  • 4/5

    Installation Time: Afternoon

    July 17, 2017

    Works Great

    Easy Install, Grear bang for your buck, Alot louder/and Lighter than stock DP.

    OscarM

    Year: 2015 Submodel: EcoBoost

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    June 20, 2017

    Great Purchase

    Great bang for your buck, sounds great! Bit raspy at red line area however legit sounds like a diesel at low rpm and sounds incredible anywhere between that near redline. Very loud with my mbrp street catback. Easy install, recommend a tuner to turn off the check engine light from the nonexisting Catalytic Converter

    Haize

    Year: 2016 Submodel: EcoBoost

    Helpful (3)

  • 4/5

    Installation Time: Afternoon

    December 30, 2016

    Sounds good

    After installing the sound is deeper and louder. I had to remove a bracket. That held the original pipe. The new one had a bracket that did not fit right. I made it work with on e bolt instead of two.

    Rhemsw

    Year: 2003 Submodel: GT

    Helpful (3)

  • 4/5

    Installation Time: Afternoon

    December 09, 2016

    Runs much better

    After installing the downpipe you will feel the difference in the drive. Car runs more smoothly. However the turbo is going to sounds much louder. And you will smell and hear a lot of new sounds in the car

    Jose

    Year: 2016 Submodel: Ecoboost

    Helpful (7)

  • 5/5

    August 26, 2016

    Love it

    Fit like a glove. Sounds good definitely opened up some boost in the lower rpms

    23boosted

    Year: 2015 Submodel: Ecoboost

    Helpful (3)

  • 4/5

    Installation Time: Less than 1 Hour

    May 24, 2016

    Way better than stock

    Great product for the price. Sound is a little tinny but coupled with a cold air up front sounds way better than stock!

    Boostedmustang

    Year: 2015 Submodel: Ecoboost

    Helpful (3)

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