Description
The Burger Tuning JB4 for the Porsche 911 Turbo and Turbo S (991.1 and 991.2) delivers up to 140 horsepower and 176 lb-ft of torque to the wheels on a completely stock vehicle—all without ECU flashing.
The JB4 installs via easy-access engine bay connections, working with your factory ECU to remap boost, timing, and fueling for maximum power while keeping stock-like smoothness and reliability. CANbus OBDII integration allows the JB4 to monitor throttle position, AFR, ignition timing, knock feedback, and temperatures—automatically adjusting output for safety. It includes preinstalled fuel control wires and a billet aluminum enclosure for durability.
Choose from multiple preloaded maps for 91 octane, 93 octane, E85 blends, and valet/low boost mode. With the optional JB4 Mobile or JB4PRO adapters, you can make on-the-fly map changes, log data, and apply free firmware updates as new maps and features are released.
Installation is fully reversible, works with all driving modes, and keeps fuel economy unchanged during normal driving.
Features & Benefits
- Gains of up to 140whp / 176wtq on stock hardware
- Faster acceleration: improved 0–60 mph & 1/4 mile times
- Preloaded with custom Porsche Turbo tuning & up to 8 selectable maps
- Ethanol (E85) compatible tuning maps
- CANbus OBDII integration for advanced mapping & engine safety control
- Boost-by-gear, warm-up protection, and knock safeguard built in
- Read & clear fault codes directly from the JB4 app
- Plug & Play installation—no ECU flash required
- Includes billet aluminum enclosure & fuel control wires preinstalled
- Compatible with JB4 Mobile & JB4PRO Bluetooth adapters
- Maintains stock drivability & fuel economy in normal use
- Fully reversible & not VIN-locked – transferable between vehicles
- Made in the USA with a 5-year warranty
Vehicle Fitment
Porsche
- 2014–2016 Porsche 991.1 Turbo & Turbo S
- 2017+ Porsche 991.2 Turbo & Turbo S
What is a JB4?
The JB4 is the most advanced plug & play tuner for turbocharged vehicles, offering real-time data processing, CANbus integration, ethanol mapping, and unmatched safety controls.
Unlike flash tunes, the JB4 keeps your factory ECU intact while still delivering massive performance gains, smooth drivability, and fully reversible installation. With free firmware updates, custom maps, and optional Bluetooth control, it’s the gold standard for Porsche tuning.
