Description
The Burger Tuning JB4 Performance Tuner is the ultimate plug-and-play tuning solution for the 2017+ Alfa Romeo Quadrifoglio platform. Designed for the 2.9L twin-turbo V6 in both the Giulia and Stelvio Quadrifoglio, the JB4 delivers up to +80hp on pump gas with a completely stock setup. Gains are even higher with bolt-ons, higher-octane fuel, E85 blends, and upgraded turbos.
With no ECU flash required and full compatibility with locked ECUs, the JB4 is perfect for performance enthusiasts who want big power without permanent modifications. Thanks to CANbus OBDII integration, it reads and adjusts boost, timing, fueling, and other key parameters in real time while protecting the engine with built-in safety systems.
It comes preloaded with up to 8 custom maps, allowing you to switch between factory power, pump-gas performance, ethanol blends, race fuel, and valet mode directly from your phone or tablet (with optional Bluetooth adapter). Installation is straightforward, fully reversible, and leaves no trace once removed.
Features & Benefits
- Gains of up to +80hp to the wheels on a stock Quadrifoglio
- Works on locked ECUs — no flash required
- Plug & Play installation — no cutting or splicing
- Preloaded with up to 8 adjustable maps for various fuels and mods
- Ethanol (E85) compatible tuning maps
- Boost-by-gear control in 1st, 2nd, and 3rd for improved traction
- View and log 40+ engine parameters via JB4 app
- Read and clear fault codes from your phone or tablet
- Progressive water/methanol injection support
- Built-in safety systems to prevent overheating, lean conditions, or overboost
- Smooth stock-like drivability during normal use
- Fuel economy unchanged in daily driving
- Fully reversible and not VIN-locked – resell or move to another car
- Rugged billet aluminum enclosure for durability
- Compatible with JB4 Mobile by DMAC ($29) or JB4PRO (free) wireless adapters
- Made in the USA with a 5-year warranty
Vehicle Fitment
Alfa Romeo
- 2017+ Giulia Quadrifoglio 2.9L Twin Turbo V6
- 2017+ Stelvio Quadrifoglio 2.9L Twin Turbo V6
What is a JB4?
The JB4 is a next-generation piggyback tuner for turbocharged vehicles. It installs between your car’s sensors and ECU to optimize boost, fueling, and ignition timing, delivering huge performance gains while maintaining factory safety features.
Unlike flash tunes, the JB4 is fully removable, works on locked ECUs, and offers unique features like ethanol mapping, boost-by-gear, fault code reading, and real-time data logging. With free firmware and map updates, it’s the most advanced and future-proof tuning solution available for the Alfa Romeo Quadrifoglio.
