Description
JB4 Performance Tuner for 2023+ Nissan Z 3.0T – Up to 100 HP and 120 lb-ft Torque Gains
Unlock the full potential of your 2023+ Nissan Z 3.0T, including Nismo models, with the JB4 Performance Tuner—the most advanced plug-and-play ECU tuning system available. Delivering up to 100 horsepower and 120 lb-ft of torque at the wheels on a completely stock vehicle, the JB4 significantly enhances acceleration, throttle response, and overall driving performance. With ethanol blends (E85) and bolt-on modifications, gains can be even greater.
The JB4 installs easily via two accessible engine bay sensors and works alongside your factory DME to intelligently remap boost, timing, and fueling. Unlike basic boost controllers, the JB4 manipulates ECU boost control signals without altering the ECU’s manifold boost reference, maintaining stock-like drivability while safely increasing boost under heavy throttle. Equipped with a 64 MHz processor, sensors are sampled 1000 times per second via dedicated 10-bit digital-to-analog converters for precise, smooth, and powerful performance.
Advanced Features and CANbus Integration
The JB4 adds OBDII CANbus functionality, allowing enhanced performance mapping, data logging, boost-by-gear control, optional AFR adjustment, and on-the-fly map switching. It supports multiple fuel types and octane levels—higher octane fuels allow higher safe boost targets and larger power gains. The JB4 is widely regarded as the most capable tuning solution for the Nissan Z.
Wireless JB4PRO Connectivity
Included is the JB4PRO Bluetooth adapter for seamless wireless connection to iOS and Android devices. Effortlessly change performance maps, monitor real-time engine data, log diagnostics, and update firmware as BMS releases free updates. The adapter is fully enclosed within the JB4 housing for maximum weather protection and a clean, streamlined look. The JB4PRO app features an intuitive interface, advanced logging tools, and real-time performance estimation, giving you total control of your car’s tuning safely and easily.
Key Features & Benefits:
- Power gains of up to 100 HP and 120 lb-ft torque at the wheels
- Improves 0-60 acceleration and quarter-mile performance
- Multiple performance maps for pump gas and E85 ethanol
- 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 traction optimization
- Controls exhaust flap operation on supported vehicles
- Compatible with the free JB4PRO smartphone app
- Offers superior performance and safety over standard 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 optimal performance
- Premium billet aluminum enclosure, designed and assembled in the USA
- 5-year warranty
Vehicle Compatibility:
- 2023+ Nissan Z 3.0T (all trims, including Nismo)
Why JB4?
The JB4 is a true plug-and-play tuner for turbocharged vehicles. Unlike basic chips, it connects directly to your car’s sensors and CANbus to safely adjust boost, timing, fuel trims, and air/fuel ratios. Free firmware and map updates from BMS continually improve performance, add new features, and enhance safety. Non-VIN locked and fully removable, the JB4 can be transferred between vehicles or resold, making it the gold standard in turbocharged performance tuning worldwide.
