COBB Accessport for Porsche 991 GT3 / GT3 RS

Choose the supported 991.1 or 991.2 GT3 engine calibration and live-gauge functions. The engine-only license works with the listed transmission applications but does not add PDK flashing.

Technical Details

• Supports listed 991.1/991.2 naturally aspirated GT3/RS engine control units.
• Manual GT3 and PDK model support are identified separately in the application notes.
• Engine calibration, gauges and logs are included; PDK-flashing software is not part of this reference.
• Use a compatible PC or Mac with Accessport Manager for maps, logs and device updates.
• Before flashing, identify any existing third-party tune. COBB warns that writing over software other than original or COBB files can damage the ECU/TCU.

Use restrictions

Use only the current calibration approved for the exact application, fuel and hardware. Any CARB Executive Order coverage is limited to its listed vehicles and configurations; no blanket approval is asserted for all maps or modifications.

For help matching this component, contact PMB Performance with your VIN, ECU reference, intended fuel and installed hardware. Our team draws on over 20 years of parts and fitment experience.

Fitment & Compatibility

Use the application details below together with the original component and any existing modifications.