Description
Transform your 2019+ Ford Ranger into a high-performance powerhouse with the JB4 Tuner, the ultimate plug-and-play solution for turbocharged EcoBoost® engines. Designed to work seamlessly with your factory ECU, the JB4 optimizes boost, timing, and fueling for maximum power, reduced turbo lag, and smooth daily drivability.
Discrete, Fully Removable Installation
Unlike ECU flash remaps, the JB4 installs discreetly by connecting to two easily accessible sensors in the engine bay. It requires no permanent modifications, ensuring your Ranger remains factory-compliant and fully reversible. Fuel economy remains unchanged during normal driving, and the system is compatible with all driving modes, including towing.
Advanced CANbus Integration
The JB4 leverages full CANbus functionality, allowing it to read real-time engine data such as pedal and throttle position, timing advance, air/fuel ratio, knock sensors, fuel trims, gear selection, and more. This advanced integration enables the JB4 to deliver unparalleled power gains with smooth, safe, and consistent performance, far beyond what less sophisticated tuners can achieve.
Multiple Performance Maps
The JB4 includes versatile tuning maps to match fuel type and vehicle modifications:
- Map0: Disable JB4
- Map1: +3.5psi peak (default, 91+ octane)
- Map2: +3.5psi, more aggressive top-end
- Map3: +4psi, ideal for 93+ octane or modified trucks
- Map4: +6psi, 30% E85 mixture
- Map5: +7psi, 30% E85 or unleaded race fuel
- Map6: User-customizable map
- Map7: Progressive Water/Methanol Injection (WMI) tuning
Wireless JB4PRO Connectivity
The JB4 now comes with the JB4PRO adapter for Bluetooth 4.0 wireless connection to iOS and Android devices. The app allows you to:
- Switch between performance maps
- Record and analyze vehicle tuning data
- Update firmware and access free performance enhancements
- Utilize advanced log analysis tools for diagnosing and optimizing your setup
Performance and Safety Benefits
- Gains up to 50 whp and 70 wtq on stock vehicles
- Improves 0-60 mph acceleration and quarter-mile times
- Boost-by-gear control for improved launches
- Reads and deletes fault codes
- Logs up to 40 engine parameters
- Controls exhaust flap operation on supported models
- Smooth, stock-like operation with all driving modes
- Full CANbus integration
- Maintains fuel efficiency under normal driving
- Not VIN-locked and fully removable
Quality and Reliability
- Durable billet aluminum enclosure
- Made and assembled in the USA
- 5-year warranty
Vehicle Fitment:
- 2019+ Ford Ranger 2.3L I4 EcoBoost®
- 2025+ Ford Ranger 2.7L V6 EcoBoost®
- 2023+ Ford Ranger Raptor 3.0L V6 EcoBoost®
Why Choose JB4?
The JB4 is the global standard in plug-and-play performance tuning for turbocharged vehicles. By tapping into specific sensors and CANbus data, it safely increases boost, timing, and fuel delivery—without requiring an ECU flash or VIN unlock. With over a decade of innovation, the JB4 delivers real, measurable performance gains while retaining factory safety systems. Trusted in over 67 countries, it’s often imitated but never duplicated.
