Description
Unlock the full performance potential of your Mazda 2.5L SKYACTIV® Turbo engine with the JB4 Performance Tuner, a cutting-edge plug-and-play solution engineered to deliver up to 40 wheel horsepower and 50 lb-ft of torque on a stock vehicle. Designed for performance, reliability, and ease of use, the JB4 enhances turbo response, acceleration, and overall driving dynamics—without requiring an ECU flash.
Plug-and-Play Installation with No ECU Modification
The JB4 installs quickly by connecting to two easily accessible engine bay sensors, working seamlessly with your factory ECU to optimize boost pressure, ignition timing, and fueling. Installation is fully reversible, leaving no trace when removed, making it ideal for both daily drivers and enthusiasts.
Fuel economy remains unchanged during normal driving, and the JB4 is fully compatible with all factory driving modes.
Advanced CANbus Integration for Precision Tuning
Equipped with a 64MHz processor sampling engine data up to 800 times per second, the JB4 delivers smooth and precise performance gains. With its integrated OBDII CANbus connection, the JB4 accesses critical engine data in real time, including:
- Throttle and pedal position
- Ignition timing and fuel trims
- Air/fuel ratio (AFR)
- Engine knock detection
- Load and boost parameters
This advanced data integration enables adaptive tuning strategies, enhanced safety systems, and significantly improved power delivery compared to basic tuning devices.
Wireless JB4PRO Smartphone Connectivity
Included with your JB4 is the JB4PRO Bluetooth adapter, allowing wireless control via iOS and Android devices. Using the free JB4PRO app, you can:
- Switch between performance maps instantly
- Monitor and log real-time engine data
- Analyze performance metrics and diagnostics
- Update firmware with new maps and features
The adapter is housed داخل the JB4 enclosure for added protection and a clean, OEM-style appearance.
JB4 Features & Benefits
- Up to 40 WHP and 50 WTQ gains on a stock vehicle
- Improved 0-60 mph and quarter-mile performance
- Multiple tuning maps for pump gas, E85 blends, and custom setups
- Quick plug-and-play installation
- Boost-by-gear control for improved traction
- Enhanced safety systems for overboost, lean conditions, and knock
- Reads and deletes diagnostic fault codes
- Logs up to 40 engine parameters in real time
- Full CANbus integration for advanced tuning and safety
- Smooth, factory-like drivability
- Compatible with all driving modes
- No impact on fuel economy during normal driving
- Requires 91 octane or higher for performance gains
- Not VIN locked and fully removable
- Durable billet aluminum enclosure
- Designed and assembled in the USA
- 5-year warranty
Vehicle Fitment
Mazda 2.5L Turbo Models:
- 2021+ Mazda 3 SKYACTIV® 2.5L Turbo
- 2017+ Mazda 6 SKYACTIV® 2.5L Turbo
- 2017+ Mazda CX-5 SKYACTIV® 2.5L Turbo
- 2016+ Mazda CX-9 SKYACTIV® 2.5L Turbo
- 2021+ Mazda CX-30 SKYACTIV® 2.5L Turbo
- 2023+ Mazda CX-50 SKYACTIV® 2.5L Turbo
What is a JB4?
The JB4 is a plug-and-play performance tuner designed for turbocharged vehicles. It installs between your vehicle’s sensors and ECU, allowing it to safely adjust boost, ignition timing, and fueling in real time. With advanced CANbus integration, smartphone connectivity, and ongoing firmware updates, the JB4 delivers significant performance gains without permanent ECU modification.
Is the JB4 a real tune?
Yes. The JB4 actively monitors and adjusts engine parameters using real-time data, delivering safe, smooth, and substantial horsepower and torque gains comparable to ECU flash tuning—without unlocking or flagging your ECU.
