Description
Maximize the performance of your Audi EA888 Gen 4 2.0 TFSI engine with the JB4 Group 16 Performance Tuner, the most advanced plug-and-play tuning solution engineered for modern VAG platforms with electric assist. Designed for seamless integration, the JB4 delivers substantial horsepower and torque gains while maintaining factory safety systems and drivability.
The JB4 is a fully user-adjustable plug-and-play tuner that connects directly to your vehicle’s sensors and ECU, allowing it to precisely control boost, ignition timing, and fueling in real time. Unlike traditional ECU flashes, the JB4 leaves no footprint, making it fully removable and ideal for enthusiasts seeking performance without permanent modifications.
Proven Power Gains
Out of the box, the JB4 delivers up to +50 horsepower and +70 lb-ft of torque on 91 octane (95 RON) with a modest +4.0 PSI boost increase. With higher octane fuel, bolt-on modifications, and custom tuning via the JB4PRO system, gains can reach up to +75 horsepower and +90 lb-ft of torque, providing a significant improvement in acceleration, throttle response, and overall driving dynamics.
Advanced CANbus Integration & Precision Control
The JB4 utilizes full CANbus connectivity, enabling it to access critical engine data such as air/fuel ratio (AFR), fuel trims, ignition timing, engine knock, throttle position, and more. This allows for adaptive, real-time tuning with built-in safety systems that actively monitor and adjust performance parameters to protect your engine under all conditions.
Additional advanced features include:
- Direct AFR control for precise fueling
- Boost-by-gear mapping for improved traction and launch performance
- Integrated water/methanol injection control (when equipped)
- Enhanced safety strategies for boost, fueling, and knock detection
Wireless JB4PRO Connectivity Included
This system includes the JB4PRO Bluetooth adapter and free mobile app, allowing full wireless control via iOS and Android devices. The JB4PRO app enables you to:
- Switch between multiple performance maps
- Monitor and log up to 40 engine parameters in real time
- Analyze performance data and diagnose tuning issues
- Receive free firmware updates with new features and improved maps
The integrated adapter design ensures improved weather resistance and a clean, OEM-style installation.
Key Features & Benefits:
- Gains of up to +75 HP and +90 lb-ft torque (with supporting mods and tuning)
- Noticeable improvements in 0-60 times and quarter-mile performance
- Multiple tuning maps for various fuel types and driving conditions
- Quick plug-and-play installation with no ECU flashing required
- Supports E85 ethanol blends and higher-octane fuels
- Reads and clears fault codes
- Logs up to 40 engine parameters in real time
- Boost-by-gear control for improved traction
- Compatible with JB4PRO smartphone app
- Full CANbus integration for advanced tuning precision
- Smooth, OEM-like drivability
- No impact on fuel economy during normal driving
- Requires 91 octane or higher for performance gains
- Fully removable and not VIN-locked
- Durable billet aluminum enclosure
- Designed and assembled in the USA
- 5-year warranty
Vehicle Fitment
Audi Models:
- 2021+ Audi B9.5 A4 40 TFSI / 45 TFSI
- 2021+ Audi B9.5 A5 40 TFSI / 45 TFSI
- 2021+ Audi B9.5 Q5 40 TFSI / 45 TFSI
- 2021+ Audi C8 A6 (261HP)
- 2021+ Audi C8 A7 (261HP)
Porsche Models:
- 2021+ Porsche Macan (Base)
Why Choose JB4?
The JB4 is a true performance tuning system, not just a basic chip. By integrating with your vehicle’s sensors and CANbus system, it delivers ECU-level tuning control over boost, timing, AFR, and fuel trims—without triggering ECU flash detection. This ensures safe, smooth, and consistent power gains while preserving factory safeguards.
With continuous free firmware updates, advanced tuning flexibility, and global recognition, the JB4 remains the industry benchmark for plug-and-play turbocharged performance tuning.
