COBB Accessport V3 – Porsche 991 (991.1/991.2) GT3/GT3 RS

Unlock the full performance potential of your Porsche 911 GT3 or GT3 RS (991.1 / 991.2) with the COBB Accessport V3. This in-cabin mountable tuning solution features a large, full-colour, high-resolution screen that lets you monitor up to six parameters in real time. Fully customisable with multiple bezel colours, display layouts (race, street, or dyno gauge cluster), and mounting options (compatible with thousands of standard vehicle mounts). With space for up to 100 calibrations, this is your new Accessport—and possibly the last one you’ll ever need.

⚠️ IMPORTANT WARNING!
Installation of this Accessport over anything other than OEM or COBB software may result in ECU/TCU failure. Please contact COBB Support before installation.

Why Choose the Accessport V3?
The Accessport V3 is the world’s best-selling and most flexible ECU upgrade solution for Porsche. Unlock hidden power by replacing conservative factory settings with more aggressive calibrations. Upgrade forever with off-the-shelf (OTS) calibrations for most bolt-on modifications. It’s the last engine management solution you’ll ever need.

CLICK HERE FOR MAP NOTES, DYNO CHARTS AND POWER GAINS

Key Features

• Compatible with Porsche 911 (991.1 / 991.2) GT3 / GT3 RS

• Large, full-colour, high-resolution screen

• Customisable multi-gauge display

• In-vehicle mount with on/off switch

• User-customisable start-up screen

• Interchangeable faceplates

Accessport V3 Functional Highlights

• Simple Installation: Includes everything needed with intuitive on-screen setup.

• Simple Uninstall: Revert the vehicle to stock via the main menu.

• Trouble Codes: Read and clear engine codes to assist diagnostics and reduce dealer visits.

• Change Maps: Store up to 100 COBB or custom maps and switch between them anytime.

• Gauges: Monitor boost and other ECU parameters in real time.

• Data Logging: Record multiple channels for detailed engine performance analysis (up to 10 hours).

• Performance Measuring: Built-in tools to track 0–100 km/h times, 60-foot launches, ¼ mile ETs, and trap speeds.

• Shift Light: Custom RPM warning lights for precision shifting.

• AP Manager: Easily update, log, and manage calibrations on PC or Mac.