Win $5,000 For Your Mustang! Enter Now!
Talk to a Mustang Expert
1-888-332-7930
Mon - Sun, 8:30 AM EST - 11:00 PM EST

Free Shipping On Orders Over $49. Details

Pypes Downpipe - Off-Road (15-17 EcoBoost)

Market Price $328.99 You Save 12% ($39.00)
Our Price

$289.99 (each)

FREE Shipping
  • Item 389194
  • MPN# DFM80

In Stock Ships same business day. Choose options to add to cart

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
  • Fits 2015-2017 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 2015-2017 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 Details

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?
  • EcoBoost - 16, 15, 17

People Who Bought This Item Also Bought

Most Helpful Reviews

4/5
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 ...

Read More
Helpful (2)

4/5
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!

Helpful (2)

Overall Rating 4.2 out of 5 stars
Read All 13 Reviews

Customer Photos

You Might Also Like

11 Questions / 6 Answers

Ask a Question

Will this fit the MBRP race catback ?

mustang1995

  • This will be able to fit with the MBRP Race cat-back as the down-pipe and cat-back exhaust will have piping sizes of 3".

    KevinD92

Helpful (0)

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?

BradM

  • The Pypes Downpipe along with other downpipes with larger diameter tubing will allow the vehicle to operate at a higher boost level, however, the stock catback exhaust will cause some restrictions. We would highly recommend a turbo-back exhaust (downpipe + catback) for the best results.

    AMJEFF

Helpful (0)

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

AndyG

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

    Rob D

Helpful (0)

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?

CameronS

  • Hello! If you are looking for the best option for optimizing your vehicle, then you will want to do a custom tune on either a dyno or datalogging on the road.

    Doug P

Helpful (0)

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?

BradM

  • You will not need to purchase an adapter as the downpipe will come with a step-down to mate up to the factory mid-pipe. This will also mean that it will work with your Flowmaster Outlaw Series axle-back exhaust.

    KevinD92

Helpful (0)

Is it normal for the car not to produce much boost without a tune after installation?

Ryan

  • Without a tune, vehicles can be limited to boost or they may also over boost depending on the exact application and down-pipe. We would highly recommend having the vehicle tuned for proper functionality.

    AMJEFF

Helpful (0)

More Products You Might Like

Customer Reviews (13) Write a Review

Overall Rating 4.2

out of 5 stars

Installation Time:Afternoon

  • Loudness / Volume 4.416667 4.4
  • Exhaust Note 4.333333 4.3
  • Fit & Finish 4.083333 4.1
  • Bang For Your Buck 4.75 4.8



  • 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 (2)

  • 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 (2)

  • 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 (1)

  • 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 (1)

  • 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 (1)

  • 4/5

    Installation Time: Afternoon

    February 29, 2016

    loud

    This downpipe is a great way to open up your exhaust but, if you have a cat back (I have flowmaster outlaw series ) its going to be loud. Someone asked me if I had a diesel engine because there is constant turbo whistle out the exhaust. I am running a Cobb tune and have a fully bolted on car except for the intercooler. The lower gears have more torque but the upper gears have less. The turbo takes a split second to spool now because there is no more back pressure. But when you are at full boost (23lbs for me) the sound and the feel is great

    Kyle

    Year: 2015 Submodel: Ecoboost

    Helpful (1)

  • 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 (0)

  • 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 (0)

  • 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 (0)

  • 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 (0)

  • 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 (0)

  • 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 (0)

  • 5/5

    Installation Time: Afternoon

    May 18, 2016

    Perfect fit on my mustang ecoboost

    it really increases more power, but it has to make tune after. if without tune that will occur check engine.

    CT

    Year: 2016 Submodel: Ecoboost

    Helpful (0)

Related Mustang Categories