Description
The Burger Tuning JB4 is the most advanced plug-and-play tuning solution for your 2017+ Alfa Romeo Giulia and Stelvio 2.0L 4-cylinder turbo models. Delivering up to 40 horsepower to the wheels (55hp crank) on a completely stock vehicle running pump gas, the JB4 unlocks your Alfa’s full potential. Gains increase further with bolt-ons, higher octane fuel, or larger turbo upgrades.
Installation is simple with a plug & play harness, requiring no ECU flash or custom tuning. The JB4 features on-the-fly map switching via smartphone or tablet, allowing you to easily toggle between factory and multiple performance maps tailored to your fuel type and modifications.
With boost-by-gear control, progressive water/methanol injection support, built-in data logging, and code reading functionality, the JB4 offers unmatched flexibility and safety not found with other tuners.
Features & Benefits
- Up to 40whp gains on stock Alfa Romeo Giulia & Stelvio 2.0L turbo engines
- Improves acceleration times including 0-60 and quarter-mile runs
- Preloaded with up to 8 custom JB4 maps for different fuels and mods
- Compatible with E85 ethanol fuel tuning maps
- Read and delete engine fault codes easily with the JB4 app
- Monitor and log up to 40 real-time engine parameters on your phone
- Boost control by gear (1st, 2nd, 3rd) for optimized launches
- Fully compatible with JB4 Mobile and JB4PRO wireless tuning apps
- Plug & Play installation with no ECU flash or permanent changes
- CANbus OBDII integration for advanced tuning features and safety
- Runs as smoothly as stock, preserving drivability and fuel economy
- Requires 91 octane fuel or better for optimal power gains
- Not VIN locked; can be removed without a trace and resold
- Rugged billet aluminum enclosure included for durability
- Proudly made in the USA with a 5-year warranty
Vehicle Fitment
- 2017+ Alfa Romeo Giulia 2.0L 4-cylinder Turbo
- 2017+ Alfa Romeo Stelvio 2.0L 4-cylinder Turbo
Wireless Connectivity Options
- JB4 Mobile by DMAC: Premium paid app for advanced gauge displays and logging (adapter sold separately)
- JB4PRO by Burger Motorsports: Free app with built-in weatherproof adapter and expert log analysis tools
What is a JB4?
The JB4 is a cutting-edge plug & play piggyback tuner for turbocharged vehicles. It installs between your car’s sensors and ECU (DME) to seamlessly manipulate boost, timing, and fueling, unlocking substantial power gains while maintaining factory-like smoothness. Unlike simpler performance chips, the JB4 uses CANbus integration, spark and fuel control, and Bluetooth connectivity for wireless tuning and data logging. It is not VIN locked, making it transferable and resale-friendly. With over a decade as the industry gold standard, the JB4 delivers unmatched performance and reliability.
