Description
The Burger Tuning JB4 for Audi EA888 Gen4 2.0 TFSI 261hp & 265hp is the ultimate plug-and-play performance tuner for Audi’s latest turbocharged four-cylinder engines with electric assist. Designed for precision, reliability, and flexibility, the JB4 delivers up to 75bhp and 90ft-lb of torque with bolt-ons and higher octane—while remaining fully reversible for dealer visits.
With full CANbus integration, the JB4 reads and adapts to real-time ECU data, including AFR, timing, fuel trims, throttle position, knock, gear, and pedal input, for smooth and safe power delivery. Built-in boost-by-gear mapping maximizes traction, while advanced safety systems automatically lower boost if the engine overheats, knocks, runs lean, or overboosts.
The JB4 comes preloaded with 8 adjustable maps, supports E85 ethanol blends, and integrates water/meth control for serious track or drag racing builds. Pair it with the optional JB4 Mobile or JB4PRO adapters for wireless map switching, data logging, firmware updates, and in-depth performance analysis right from your smartphone.
Features & Benefits
- Gains starting at +50bhp / +70ft-lb on pump gas (91 octane / 95 RON)
- Up to +75bhp / +90ft-lb with bolt-ons, higher octane, or E85
- Boost-by-gear for improved traction in lower gears
- Full CANbus OBDII integration for precision tuning and safety monitoring
- Integrated water/methanol control for advanced setups
- Ethanol (E85) compatible maps included
- 8 preloaded maps for multiple fuel and mod levels
- Read and delete fault codes directly from your phone
- Compatible with JB4 Mobile and JB4PRO smartphone adapters
- Maintains stock-like smoothness and drivability
- Works with all factory driving modes
- Quick Plug & Play installation – no ECU flash required
- Not VIN-locked – removable without a trace
- Made in the USA – 5-year warranty
Vehicle Fitment
Audi
- 2021+ B9.5 A4 45TFSI
- 2021+ B9.5 A5 45TFSI
- 2021+ B9.5 Q5 45TFSI
- 2021+ C8 A6 261hp
- 2021+ C8 A7 261hp
Porsche
-
2021+ Macan Base
What is a JB4?
The JB4 is the most advanced plug-and-play tuning solution for turbocharged vehicles, intercepting and optimizing signals between your engine sensors and ECU to safely unlock substantial power gains. Unlike basic tuners, the JB4’s CANbus integration, flex-fuel capability, and real-time safety features make it one of the most powerful and versatile upgrades available.
With free firmware updates, a robust community, and complete removability, the JB4 has been the gold standard in turbo performance tuning for over a decade—offering a perfect balance of power, safety, and convenience.
