2025 Toyota 4Runner COBB Tuning Accessport V3 Tuner

The Accessport is the world's best selling, most flexible, and easiest to use ECU upgrade solution for your Toyota. Unlock power hidden within the vehicle by replacing conservative factory settings with more aggressive calibrations. Follow our 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.

This version of the Accessport includes the capability to flash the TCM which is the unit that controls the transmission. It includes various Off The Shelf transmission tunes which adjust shift points, shift firmness, skip shift behavior, and torque limits to fit your preferred driving style.

This Accessport includes a Gateway Bypass Harness. To use it, connect the harness to your vehicle’s OBD-II port, the Gateway connector, and then to the Accessport. The Gateway Bypass Harness enables ECU communication in situations where the Accessport would otherwise be ignored—such as during initial installation, when dumping an unsupported vehicle ROM file, or when recovering from a failed flash. It is not required for map changes or uninstalling the Accessport.

Warning! Installation of this Accessport over anything other than OEM or COBB software may result in ECU/TCU failure.

Features

• Large, full color, higher resolution screen
• Customizable multi-gauge display
• In vehicle mount, with on/off switch
• Can be used with Accesstuner (available separately) to create custom tunes
• Interchangeable faceplates

More Features

• 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.
• Trouble Codes: Read engine trouble codes to diagnose issues.  Clear them when resolved.  Prevent expensive trips to the dealership.
• 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.