COBB Accessport V3 | 2015-2023 Ford Mustang Ecoboost (AP3-FOR-003)

Cobb Tuning

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Mustang Ecoboost Accessport AP3-FOR-003 by COBB Tuning

The Accessport is the world's best selling, most flexible, and easiest to use ECU upgrade solution for your Ford Ecoboost Mustang. Unlock power hidden within the vehicle by replacing conservative factory settings with more aggressive calibrations. Follow the staged upgrade path with pre-loaded Off The Shelf (OTS) maps or use custom mapping for any modification level. It's the last engine management solution you'll ever need.

Simple ECU flashing with gauge package! The new in-cabin mountable Accessport V3 has a large, full color, higher resolution screen which allows you to monitor up to six parameters in real time.

Fully customizable from the look (multiple bezel colors), layout (set up race, street, or dyno gauge clusters), and mounting options (choose from 1,000s of standard vehicle mounts). And what's looks without brains? More processing power, memory, and storage to flash faster while saving all of your maps and logs. This is your new Accessport.

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  • Simple Installation: Everything is included for the simple installation! Intuitive on-screen instructions identify your exact vehicle and available maps.
  • Simple Uninstall: Revert your ECU to exactly as it was before with the easy to use Uninstall option from the main menu.
  • Troubleshooting: Read codes, Clear Codes, Identify Vehicle, I/M Readiness, Keep Alive Memory, Memory Snapshot, Reset ECU.
  • Change Maps: Store up to 100 maps from our OTS map database or from your favorite COBB tuner and quickly switch between them for any need.
  • Gauges: Use your Accessport as a gauge to monitor boost or any other live information, directly from the ECU.
  • Data Logging: Record multiple data channels simultaneously for in-depth evaluation of engine performance. Stores up to 10 hours.
  • Performance Measuring: Welcome to your own performance evaluation suite! Measure 0-60 mph time, 60 foot and ¼ mile ET's. and Trap Speed.
  • Shift Light: Set custom RPM warning lights for perfect shifts every time.
  • AP Manager: Use your PC or Mac to manage maps, download recorded datalogs, or quickly update your Accessport.
  • COBB Adjustable Traction Control: Adjust target traction slip on the fly (Slots 1-8) and maximize tire grip to best suit given track conditions (wet/damp/dry/street/slip/burnout/etc). Note: Feature must be enabled in ECU calibration for use. (Fiesta ST, Focus ST, Focus RS & 2015 - 2017 Mustang Only.)
  • COBB Flat Foot Shift (MT Only): Improve shift times and keep boost built during shifts. Flat Foot Shifting can hold engine RPM at a set RPM between 3000-8000 RPM during shifting. This feature is enabled in COBB OTS maps. (Fiesta ST, Focus ST, Focus RS & 2015 - 2017 Mustang Only.)
  • COBB Launch Control: Adjust Launch Control on the fly with 6 pre-configured RPM slots to dial in launch based on track conditions and vehicle configuration. Enabled in OTS Maps and configurable within Accesstuner Pro. (Fiesta ST, Focus ST, Focus RS & 2015 - 2017 Mustang Only.)
  • COBB Change Map Slot: Map switching allows for instant changes to several tables inside the vehicles calibration without having to re-flash the ECU! Each "Map Slot" is grouped into a folder found inside the Map Switching Features group. When a map slot is selected by the driver, the ECU will use the corresponding values as defined in each folder. Further Documentation can be found here.
  • COBB Burnout Mode: Enabled in OTS (Off the Shelf Maps) This feature allows you to hold the car at a predetermined RPM and perform a burnout. Burnout mode prevents you from over revving the engine while performing a burnout! (Fiesta ST, Focus ST & 2015 - 2017 Mustang Only.)


  • Larger, full color, higher resolution screen
  • Customizable multi-gauge display
  • In vehicle mount, with on/off switch
  • Faster and easier to use with a familiar face
  • Interchangeable faceplates

Performance Gains (Stage 1, 93 Octane)

  • Peak Power Gain: +4%
  • Peak Torque Gain: +21%
  • Max Power Gain: +22%
  • Max Torque Gain: +24%


  • 2015 - 2020 Ford Mustang Ecoboost
  • USDM Only

What's In The Box?

  • 1 - Accessport
  • 1 - In-Vehicle Mount
  • 1 - Carrying Case
  • 1 - OBD2 Cable
  • 1 - USB 2.0 A to Micro B Cable
  • 1 - Customizable Faceplate
  • 1 - Quick Start Guide



  • COBB Tuning Products, LLC warrants to the original retail purchaser that this product holds a 12-month limited warranty from the date of purchase against defects in materials and workmanship.

Customer Reviews

Based on 1407 reviews
Easy and useful

Simple install, definitely took away most of the terrible rev hang on VAs

Solid device

The AP is the default tuning option for Subaru, but luckily it's a pretty well made device. I definitely enjoyed getting the MAP Stage 1 tune for free.

Ease of use

A complete all in one!


Works phenomenal!

Kelly Radford

This worked perfect. Exactly what I needed.