Description
JB4 Tuner for 2014+ Porsche 911 Turbo & Turbo S – Up to 140 HP and 176 lb-ft Torque Gains
Maximize the performance of your 2014+ Porsche 911 Turbo and Turbo S with the JB4 Performance Tuner—the ultimate plug-and-play solution for turbocharged vehicles. Delivering up to 140 horsepower and 176 lb-ft of torque at the wheels on a stock vehicle, the JB4 dramatically improves acceleration, throttle response, and overall driving enjoyment while preserving the safety and reliability of your factory ECU.
The JB4 plugs into accessible engine bay sensors and works seamlessly with your stock ECU to remap boost, timing, and fueling for reduced turbo lag and optimal power delivery, all without the risks, costs, or complications associated with traditional ECU flash tuning. Fully compatible with locked ECUs, JB4 provides significant performance gains without modifying your factory programming.
Multiple Performance Maps & Wireless Control
JB4 includes several preloaded performance maps for 91 octane, 93 octane, E85 fuel mixtures, and VALET/low-boost mode. With the included JB4PRO Bluetooth adapter and free app, you can wirelessly switch between maps, monitor engine data in real-time, log performance, and receive free firmware updates with enhanced features. The adapter fits inside the JB4 enclosure for superior weather protection and a sleek, unobtrusive appearance.
Discrete & Safe Installation
JB4 installs quickly and discreetly, fully removable without leaving a trace. It integrates with all driving modes and maintains fuel economy during normal driving. Designed and assembled in the USA, the JB4 comes with a 5-year warranty.
Key Features & Benefits:
- Power gains of up to 140 HP and 176 lb-ft torque on a stock vehicle
- Improves 0-60 mph and quarter-mile acceleration times
- Multiple performance maps for pump gas and E85 ethanol blends
- Quick plug-and-play installation, fully removable, non-VIN locked
- Reads and clears fault codes; logs up to 40 engine parameters
- Boost-by-gear control for improved traction
- Controls exhaust flap operation on supported vehicles
- Compatible with the free JB4PRO smartphone app
- Superior performance and safety compared to basic chip tunes
- Full CANbus integration for real-time ECU-level tuning
- Smooth operation in all driving modes
- Minimal impact on fuel economy during normal driving
- Requires 91 octane or higher for full performance potential
- Premium billet aluminum enclosure
- 5-year warranty
Vehicle Compatibility:
- 2014-2016 Porsche 991.1 Turbo and Turbo S
- 2017+ Porsche 991.2 Turbo and Turbo S
Why JB4?
The JB4 is a true plug-and-play ECU tuner for turbocharged vehicles. By connecting directly to sensors and CANbus, it adjusts boost, timing, fuel trims, and AFR with precision—delivering safe, smooth, and substantial performance gains. Free firmware and map updates from BMS continually enhance performance, add new features, and maintain safety. Non-VIN locked and fully removable, the JB4 has been the gold standard in turbocharged Porsche tuning worldwide for over a decade.
