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Mustang Downpipe
Your Mustang
Pick your year to see what fits.
This page covers the US Mustang V6, GT and EcoBoost, 1994 to 2023.
+10–25 whp (est.)
Expert$500–$8003–5 hrs
Why do it
Cuts backpressure so the turbo spools faster.
Tools you'll need
- Jack and 4 jack stands
- Socket set
- Torque wrench
- O2 sensor socket
- Penetrating oil
Starting out? See our budget tool list.
Parts to buy
- Mishimoto catted MMDP-MUS4-15CAT (15-23 EcoBoost) The same downpipe as our video.Fits 2015–2023 · eco
Doesn't fit your car (0)
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Before you start
- Check your local laws on exhaust mods.
- You need a tune for this.
Steps
Fit the sensors
- Move the upper sensor and prepare the new pipe.
Remove the factory pipe
- Take it out.
Tighten the clamp
- Fit the new pipe and tighten the clamp.
How to know it worked
- No exhaust leaks at the joints.
- Tips sit even in the bumper.
- Nothing touches the body.
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Safety first
- Park on flat ground, set the parking brake and chock the wheels.
- Never get under a car held up only by a jack. Use jack stands.
- Let the engine and exhaust cool first.
- Disconnect the battery before unplugging electrical parts.
- Wear safety glasses.
- If something doesn't match your car, stop and ask a shop.
Follow your part's instructions and your service manual's torque specs.