Description
The Burger Tuning JB4 is the ultimate plug-and-play performance tuner for turbocharged Lexus models, delivering up to 45 crank horsepower and torque gains over stock on the default map—with even higher output possible on race gas or E85 mixtures.
Designed to work alongside your factory ECU, the JB4 optimizes boost, timing, and fueling for improved acceleration, sharper throttle response, and reduced turbo lag. Its advanced 64mhz processor samples engine sensor data 800 times per second, ensuring smooth, consistent power delivery without compromising drivability.
With full OBDII CANbus integration, the JB4 offers unparalleled tuning precision, safety features, and real-time data logging—all adjustable from your smartphone with the JB4 Mobile or JB4PRO app. Installation is quick, discreet, and fully reversible, leaving no trace on your ECU.
Key Features & Benefits
- Gains up to +45 crank HP & torque on stock
- Multiple preloaded maps for different fuels & mods
- Boost-by-gear control for better traction and launches
- Ethanol (E85) compatible tuning maps
- Read & delete fault codes through JB4 app
- View & log up to 40 real-time engine parameters
- Works seamlessly in all Lexus drive modes
- Quick plug-and-play installation – no ECU flash required
- Fully reversible, not VIN-locked – can be resold later
- Rugged billet aluminum JB4 enclosure
- Premium 91+ octane fuel recommended for gains
- Made in the USA with a 5-year warranty
Vehicle Fitment
- 2016+ Lexus RC 200t
- 2016+ Lexus IS 200t / IS 300t
- 2016+ Lexus GS 200t
- 2016+ Lexus NS 200t
- 2015+ Lexus NX 200t
- 2018+ Lexus NX 300
Wireless Connectivity Options
- JB4 Mobile by DMAC – $29 app with advanced gauge display & data logging (adapter sold separately)
- JB4PRO by Burger Motorsports – Integrated weatherproof adapter with free app & log analysis tools
