Description
JB4 Performance Tuner for 2016+ Infiniti Q50, Q60, & QX30 2.0T
Unlock additional performance from your 2016+ Infiniti Q50, Q60, or QX30 2.0L Turbo with the JB4 Performance Tuner. Designed for plug & play installation, the JB4 delivers up to 40 horsepower and 40 lb-ft of torque at the wheels on a stock vehicle while maintaining factory-like smoothness and fuel economy.
The Stage1 JB4 tuner attaches to two easily accessible engine sensors and works in harmony with your factory DME/ECU to remap boost, timing, and fueling. By manipulating ECU boost control signals—but not the manifold reference—the JB4 raises boost safely under heavy throttle without compromising factory calibration. With a 64MHz processor sampling sensors 800 times per second, the system ensures smooth, powerful performance with precise control.
Boost gains are user-adjustable via the optional BMS data cable, with default Stage1 settings at +3 psi over stock. The JB4 can be used independently or alongside aftermarket flash maps for additional boost. Power gains vary by model: Red Sport variants typically see 30–50hp, while Silver Sport models can achieve up to 60–100hp, depending on fuel quality.
The JB4 is fully reversible, removing in under a minute without a trace, and is compatible with all driving modes. Fuel economy remains unaffected during normal driving.
JB4 Features & Benefits
- Power gains of up to 40hp and 40lb-ft torque on stock 2.0T engines
- Improves 0-60 mph acceleration and quarter-mile times
- Multiple tuning maps for 91/93 octane, E85, and race fuels
- Plug & play installation; fully reversible
- Boost-by-gear control for improved traction
- Reads and deletes fault codes
- Displays and logs up to 40 engine parameters
- Full CANbus integration for real-time tuning
- Controls exhaust flap operation on supported vehicles
- Compatible with the JB4PRO smartphone app for wireless logging, map changes, and firmware updates
- Runs as smoothly as stock with no impact on normal fuel economy
- Requires 91 octane or higher for optimal performance gains
- Not VIN-locked; fully removable and transferable
- Includes billet aluminum enclosure
- Made in the USA with a 5-year warranty
Vehicle Fitment
- 2016+ Infiniti Q50 2.0L Turbo Pure
- 2016–2022 Infiniti Q60 2.0L Turbo Pure
- 2016–2019 Infiniti QX30 2.0L Turbo
JB4 Map Guide
- Map 0: Disables tuner
- Map 1: Up to +4psi over stock, suitable for 91+ octane
- Map 2: Up to +5psi over stock, suitable for 93+ octane
- Map 3: User-definable fixed boost map
- Map 4: Stock performance with CANbus active for logging
- Map 5: +6.5psi over stock, suitable for E30+ or unleaded race gas
- Map 6: User-definable boost map
- Map 7: +7psi over stock, suitable for unleaded race gas
- Map 8: Coming soon – water/methanol progressive integration
About the JB4
The JB4 is a true plug & play performance tuner for turbocharged vehicles. Installed between your vehicle’s sensors and DME/ECU, it adjusts boost, timing, and fuel delivery for safe and reliable performance gains. With advanced CANbus integration, fuel & spark control, and Bluetooth smartphone connectivity, the JB4 provides more power and smoother delivery than basic chip tuners. It is fully removable, not VIN-locked, and works with aftermarket flash maps. The JB4 has been the gold standard in turbocharged plug & play performance tuning for over a decade, sold in more than 67 countries worldwide.
