2013–2016 Porsche 911 GT3 (991 Gen) Custom HP Tuners Tuning (3.8L Flat-Six)

Our HP Tuners custom calibrations for the 2013–2016 Porsche 911 GT3 (991.1) are built to unlock the true potential of the high-revving 3.8L naturally aspirated flat-six. Precision-engineered for track and street performance, our in-house tuning sharpens throttle response, optimizes fueling and ignition strategies, and enhances drivability while maintaining Porsche’s legendary reliability.

Key Features

• Engine Coverage – 2013–2016 Porsche 911 GT3 (991 Gen, 3.8L flat-six, DFI engine)

• Transmission Support – Calibration available for the 7-speed PDK dual-clutch transmission, refining shift speed, launch control, and torque management

• Custom Calibration – Tailored for intake, exhaust, header upgrades, and race fuel/E85 conversions

• Safe Performance – Calibrations developed with precision ignition timing, fueling strategies, and Porsche-safe rev control

• Remote Tuning – Fully supported via HP Tuners MPVI2 and MPVI3 (ECU/TCU unlock required)

Benefits

• Sharper throttle response and improved linearity

• Optimized powerband for both track and street use

• Smoother, faster gear changes with refined PDK calibration

• Enhanced drivability without sacrificing reliability

• Reliable calibration for both stock and performance-modified GT3 builds

Compatibility

Custom tuning is available for:

• 2013–2016 Porsche 911 GT3 (991.1, 3.8L Flat-Six DFI, PDK only)

Process

1. Purchase your Porsche 911 GT3 tuning package.

2. Unlock ECU/TCU if required.

3. Use HP Tuners to read your factory calibration.

4. Provide your stock file and modification list.

5. Receive a calibration tailored for your GT3.

6. Flash your tune and enjoy optimized performance.

Professional Assurance

Every Porsche 911 GT3 calibration is developed in-house for maximum performance and drivability. Whether you’re running a completely stock 991.1 GT3 or a track-focused build with intake, header, and fueling upgrades, our HP Tuners custom tuning ensures precision, reliability, and results you can feel every lap.

Meta Description (SEO)

Custom HP Tuners tuning for 2013–2016 Porsche 911 GT3 (991 Gen, 3.8L Flat-Six). Improve throttle response, drivability, and performance with safe, reliable calibrations.