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Mustang ECU tune

Your Mustang

Pick your year to see what fits.

This page covers the US Mustang V6, GT and EcoBoost, 1994 to 2023.

+40–80 whp (est.)
Easy$700–$70030 min
All Mustang mods

Why do it

Adds power across the rev range on the EcoBoost.

Tools you'll need

Starting out? See our budget tool list.

Parts to buy

Double-check fitment before buying. We may earn a commission when you buy through these links, at no extra cost to you.

Before you start

  • Connect a battery charger if you can. A low battery during a tune can cause real problems.
  • Never turn off the car or unplug the tuner during a tune.

Steps

  1. Plug it in

    • Plug it into the port.
    Watch this step (Cobb on an EcoBoost) (1:02–1:57)

  2. Install the Accessport

    • Follow the setup.
    Watch this step (1:57–2:50)

  3. Load the map

    • Load a stage.
    Watch this step (2:50–4:30)

  4. Flash the car

    • Let it finish.
    Watch this step (4:30–8:07)

How to know it worked

Did this guide work for you?

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.