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Mishimoto EcoBoost Catted Downpipe (15-17 Mustang EcoBoost)

Mishimoto EcoBoost Catted Downpipe (15-17 Mustang EcoBoost)


Market Price $599.99 You save $82 (14%)


Mishimoto MMDP-MUS4-15CAT

Ships Within 24 Hours

Availability: In stock



  • Significant Increase in Horsepower and Torque
  • Aggressive Exhaust Note and Turbo Sound Under Acceleration
  • High Flow Catalytic Converter
  • Durable 304 Stainless Steel Construction
  • Large 3" Diameter with 2-1/4" Reducer to Fit Stock Exhaust
  • Reducer Can be Eliminated for use with 3" Catback Exhaust
  • Clears Both Manual and Automatic Transmission
  • Custom Tune Required
  • Maximum Exhaust Flow for Maximum Power!
    The Mishimoto EcoBoost Mustang downpipe was designed with maximum exhaust flow in mind. It is formed from 3" stainless steel tubing with mandrel bends to minimize restriction. This downpipe will easily outflow the restrictive stock one and allow your 2015-2017 EcoBoost Mustang to make maximum power and torque, as well as adding an aggressive exhaust note. The high flow catalytic converter helps keep emissions in check and reduce fuel odor, but it still offers nearly the same gain as the wide-open off road version. Mishimoto's test car made an additional 65 rwhp and 108 rwtq over stock with this downpipe and a custom tune.

    Works With Stock or Aftermarket Catback
    The Mishimoto Mustang EcoBoost downpipe was also designed to be easy to install, as well as easily adaptable to many exhaust configurations. This downpipe features a modular design, allowing it to fit either the factory exhaust or you can take off the 3" to 2-1/4" reducer leaving a 3" V-band flange for either Mishimoto's 3" catback or a custom exhaust.

    Easy Installation
    The two-piece EcoBoost Mustang downpipe design allows for an easier installation, allowing you to do each section separately, rather than trying to fit the whole pipe into place at once. All of the necessary clamps and flanges you’ll need for installation are included and it mates perfectly to your stock turbo gasket, making the need to purchase additional gaskets or hardware unnecessary. Like all Mishimoto products, this downpipe comes with the Mishimoto Lifetime Warranty!

    2015-2017 EcoBoost Mustang

    Product video

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