Description
The Burger Tuning JB4 is the most advanced plug & play tuner available for the 2018+ Lexus LS 500 3.5L V6 Twin Turbo, delivering up to 75 horsepower gains without the risks of ECU flashing.
Installation is quick and fully reversible—perfect for leased vehicles or owners who want the option to return to stock. The JB4 integrates with the CANbus OBDII system to access real-time engine data for precise adjustments to boost, timing, and fueling, ensuring smooth power delivery and factory-level drivability.
No additional modifications are required—installing the JB4 as your first and only upgrade will completely transform the performance of your LS 500. For enthusiasts who want more control, optional Bluetooth or data cable connections allow for logging, map switching, and firmware updates as Burger Motorsports releases new maps and features.
Features & Benefits
- Gains of up to 75hp on a stock vehicle
- Faster 0–60 mph and 1/4 mile times
- Preloaded with custom Lexus LS 500 maps (up to 8 tuning levels)
- Ethanol (E85) compatible tuning options
- Read & clear fault codes through the JB4 app
- Monitor and record up to 20 live engine parameters
- Boost-by-gear control for optimized traction
- Compatible with JB4 Mobile for smartphone control, data logging, and adjustments
- Quick Plug & Play installation – no ECU flash required
- Works with all factory driving modes
- Maintains stock drivability and fuel economy in normal driving
- Not VIN locked – transferable between vehicles
- Rugged billet aluminum JB4 enclosure included
- Made in the USA with a 5-year warranty
Vehicle Fitment
-
2018+ Lexus LS 500 3.5L V6 Twin Turbo
What is a JB4?
The JB4 is the gold standard in plug & play turbo tuning, integrating advanced CANbus data for dynamic adjustments, added safety features, and maximum performance. Unlike generic piggyback chips, the JB4 uses real-time ECU data—including fuel trims, air/fuel ratios, knock detection, and timing advance—to adapt its tuning for both safety and power.
With optional Bluetooth mobile connectivity, you can make map changes on the fly, monitor live gauges, log performance runs, and update to the latest free firmware maps from Burger Motorsports. Fully reversible and undetectable when removed, the JB4 is the safest, most versatile way to unlock your Lexus LS 500’s full potential.
