Mishimoto 15+ Ford Mustang 2.3L EcoBoost Downpipe w/ Catalytic Converter

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  • Manufacturer Part Number: MMDP-MUS4-15CAT
  • $600.95
    Unit price per 
  • Save $65


  • WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. PROP65 INFO
Mishimoto continues to expand on our line of performance exhaust system components! After months of development and testing, Mishimoto has released the stainless steel downpipe for the 2015+ Ford Mustang EcoBoost! This downpipe was designed with maximum exhaust flow in mind, using 3" mandrel-bent stainless steel tubing. This downpipe will easily outflow the stock restrictive piece, and allow your 2015+ Ford Mustang EcoBoost to make maximum power and torque! With this downpipe installed on our 2015+ Ford Mustang EcoBoost and the ECU re-flashed with a more aggressive tune, the engine was able to make an additional 65whp and 108wtq over stock with our catted downpipe installed. With the Mishimoto catless downpipe installed, we produced additional gains of 9.8 whp and 8.3 wtq over the catted model, making this a great option for those seeking maximum power output. The Mishimoto downpipe was also designed to be easy to install, as well as adaptable to many exhaust configurations. We know there are many choices out there for cat-back exhausts, and the included 3.0"-2.25" adapter allows easy mating to the stock exhaust or most aftermarket cat-back exhausts with the stock-sized 2.25" mid-pipe. The adapter can also be omitted, so the downpipe has a 3.0" V-band outlet to mate up to a custom exhaust, or the upcoming Mishimoto Cat-Back Exhaust to make a full 3" downpipe / mid-pipe combination. The two-piece downpipe design allows for an easier installation without wrestling a large bulky pipe into place. The Mishimoto downpipe comes with all of the necessary clamps and flanges you'll need for installation, and mates perfectly to your stock turbo gasket, making the need to purchase additional gaskets or hardware unnecessary! Like all of our EcoBoost Mustang parts, this downpipe comes with the Mishimoto Lifetime Warranty!

This Part Fits:

Year Make Model Submodel
2019-2020 Ford Mustang Bullitt
2015-2021 Ford Mustang EcoBoost
2015-2021 Ford Mustang EcoBoost Premium
2015-2021 Ford Mustang GT
2015 Ford Mustang GT 50 Years Limited Edition
2015-2021 Ford Mustang GT Premium
2021 Ford Mustang Mach 1
2015-2020 Ford Mustang Shelby GT350
2015-2020 Ford Mustang Shelby GT350R
2020-2021 Ford Mustang Shelby GT500
2015-2017 Ford Mustang V6
2015-2021 Subaru WRX Base
2015-2021 Subaru WRX Limited
2015-2021 Subaru WRX Premium