Description
Maximize the performance of your 2021+ Ford Bronco or Bronco Raptor with the industry-leading JB4 Performance Tuner. This advanced plug-and-play system delivers up to 100 wheel horsepower and 120 lb-ft of torque gains on stock vehicles—without the risks, permanence, or ECU footprint associated with flash tuning.
Engineered for precision and reliability, the JB4 enhances boost pressure, ignition timing, and fueling, resulting in faster acceleration, improved throttle response, and reduced turbo lag both on-road and off-road.
Plug-and-Play Installation – No ECU Flash Required
The JB4 installs quickly by connecting to two easily accessible sensors in the engine bay and works seamlessly alongside your factory ECU. Unlike flash tunes, the JB4 leaves no permanent trace, allowing it to be fully removed at any time.
Your vehicle’s ECU remains unaware of increased boost levels, preserving factory safeguards and reliability. Fuel economy remains unchanged during normal driving conditions, and the system is fully compatible with all factory driving modes, including towing and off-road settings.
The JB4 also features automatic engine detection, making it compatible with 2.3L, 2.7L, and 3.0L EcoBoost engines.
Advanced CANbus Integration for Real-Time Adaptive Tuning
Equipped with a plug-and-play OBDII CANbus connection, the JB4 reads and processes critical engine data directly from the ECU in real time, including:
- Throttle and pedal position
- Ignition timing and fuel trims
- Air/fuel ratio (AFR)
- Engine knock and load data
- Boost pressure and gear position
This advanced integration enables dynamic tuning adjustments, improved safety systems, and smooth, consistent power delivery far beyond basic tuning devices.
Multiple Performance Maps for Any Driving Condition
The JB4 includes a range of pre-configured maps to suit different fuels and performance goals:
- Map 0: JB4 disabled (stock operation)
- Map 1: +3.5 PSI (91+ octane, daily driving)
- Map 2: +3.5 PSI (more aggressive power delivery)
- Map 3: +4 PSI (93+ octane or modified vehicles)
- Map 4: +6 PSI (recommended for E30/E85 blends)
- Map 5: +7 PSI (E85 blends or race fuel)
- Map 6: User-adjustable custom tuning
- Map 7: Water/Methanol Injection (WMI) tuning
Wireless JB4PRO Smartphone Control
The included JB4PRO Bluetooth adapter enables seamless wireless connectivity with iOS and Android devices. Using the JB4PRO app, you can:
- Change performance maps instantly
- Monitor and log real-time engine data
- Analyze performance metrics and diagnostics
- Update firmware with the latest features and tuning enhancements
The adapter is integrated داخل the JB4 enclosure for improved durability and a clean, OEM-style appearance.
JB4 Features & Benefits
- Up to 100 WHP / 120 WTQ gains (2.7L platform)
- Improved 0–60 mph times and acceleration
- Multiple tuning maps for pump gas, E85, and race fuel
- Quick plug-and-play installation
- Boost-by-gear control for improved traction
- Advanced safety systems (overboost, lean protection, knock detection)
- Reads and clears diagnostic trouble codes
- Logs up to 40 engine parameters
- Full CANbus integration for precision tuning
- Smooth, factory-like drivability
- Compatible with all driving modes, including towing
- 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
- 2021+ Ford Bronco 2.3L Turbo
- 2021+ Ford Bronco 2.7L Turbo
- 2022+ Ford Bronco Raptor 3.0L V6 Turbo
What is a JB4?
The JB4 is a plug-and-play performance tuning system designed for turbocharged vehicles. It installs between your vehicle’s sensors and ECU, enabling real-time adjustments to boost, ignition timing, and fueling for significant power gains. With advanced CANbus integration, smartphone connectivity, and ongoing firmware updates, the JB4 delivers industry-leading performance without permanent ECU modification.
Is the JB4 a Real Tune?
Yes. The JB4 actively monitors and adjusts engine parameters using real-time ECU data, delivering safe, smooth, and substantial horsepower and torque gains comparable to ECU flash tuning—without unlocking or permanently altering your ECU.
