Description
Unlock the performance potential of your 2018+ Lexus LS 500 3.5L V6 Twin Turbo with the Burger Motorsports JB4 Performance Tuner. Designed to deliver substantial horsepower and torque improvements without requiring an ECU flash, the JB4 is an advanced plug-and-play engine tuning system that provides enhanced performance, customizable tuning options, and comprehensive vehicle monitoring capabilities.
The JB4 delivers power gains of up to 60 horsepower at the wheels and approximately 75 horsepower at the crankshaft on a completely stock vehicle running pump gasoline. Additional performance modifications, higher-octane fuel, E85 ethanol mixtures, and larger turbochargers can provide even greater power gains.
Featuring an easy-to-install plug-and-play wiring harness, the JB4 connects directly to the vehicle's sensors and engine management system to optimize performance while maintaining smooth factory-like drivability. Its advanced tuning capabilities include on-the-fly map switching, boost control by gear, integrated data logging, fault code reading and clearing, and comprehensive CANbus integration.
The JB4 does not require additional modifications, previous tuning stages, or complicated user setup. It can be installed as the first and only performance modification, making it an excellent option for Lexus LS 500 owners looking to improve acceleration, power delivery, and overall driving performance.
The system includes the JB4PRO Bluetooth adapter and access to the free JB4PRO smartphone application, allowing users to monitor vehicle performance, adjust tuning maps, record engine data, analyze logs, and install firmware updates.
JB4PRO Bluetooth Smartphone Connectivity
The JB4 includes the JB4PRO Bluetooth 4.0 adapter, providing wireless connectivity between the tuning system and compatible iOS or Android smartphones.
With the free JB4PRO application, users can access advanced tuning and monitoring features, including:
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Record and analyze vehicle performance data.
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Switch between available JB4 performance maps.
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Monitor engine operating parameters.
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Update JB4 firmware with available free updates.
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Access new maps, features, and ongoing development improvements.
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Review vehicle logs using advanced analysis tools.
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Estimate vehicle performance and help identify potential tuning concerns.
The JB4PRO adapter is integrated into the JB4 enclosure for improved weather protection and a streamlined installation.
The application features an intuitive interface, built-in help functions, and advanced logging capabilities, making it suitable for both everyday drivers and enthusiasts interested in monitoring and optimizing vehicle performance.
JB4 Performance Features and Benefits
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Delivers power gains of up to 75 horsepower at the crankshaft on a stock vehicle running pump gasoline.
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Improves 0–60 mph acceleration and quarter-mile performance.
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Includes multiple tuning maps for different fuel types and performance requirements.
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Features quick plug-and-play installation and removal.
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Supports E85 ethanol fuel blends.
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Reads and clears engine fault codes.
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Displays and records up to 40 engine parameters.
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Provides boost-by-gear control for improved traction and performance in lower gears.
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Supports exhaust flap operation on compatible vehicles.
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Includes compatibility with the free JB4PRO smartphone application.
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Offers advanced performance tuning and monitoring capabilities compared with basic chip tunes.
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Features full CANbus integration.
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Maintains smooth, factory-like drivability when properly configured.
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Compatible with all factory driving modes.
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Does not impact fuel economy during normal driving when operating under comparable conditions.
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Requires 91-octane fuel or higher for performance gains.
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Is not VIN-locked and can be fully removed.
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Includes a billet aluminum enclosure.
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Designed and assembled in the USA.
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Includes a 5-year warranty.
What Is the JB4 Performance Tuner?
The JB4 is a plug-and-play performance tuning system designed for turbocharged vehicles. It installs between the vehicle's engine sensors and the DME/ECU, using these connections to modify engine performance and increase power output.
Although other tuning systems use similar installation methods, the JB4 distinguishes itself through its advanced connection points, processing capabilities, CANbus integration, fuel and spark control, Bluetooth smartphone connectivity, and extensive performance features.
The JB4 uses real-time vehicle data to optimize engine operation and provide improved horsepower, torque, and drivability. Its advanced features allow users to monitor engine parameters, adjust tuning maps, and access performance information without requiring a traditional ECU reflash.
Burger Motorsports regularly develops and releases free mapping and firmware updates, introducing additional performance improvements, new features, and continued system development.
The JB4 is not VIN-locked to a specific vehicle and can be removed and transferred between compatible vehicles or resold.
With more than a decade of development and use worldwide, the JB4 has established itself as a recognized plug-and-play performance tuning solution for turbocharged vehicles.
Is the JB4 a Real Tune?
Yes. The JB4 is a genuine engine performance tuning system that uses vehicle sensor connections and CANbus data to modify engine operating parameters.
By monitoring real-time vehicle information, the JB4 can adjust boost, ignition timing, air-fuel ratios, and fuel trims, providing tuning capabilities comparable in certain respects to an ECU reflash.
The system is designed to deliver significant horsepower and torque improvements while maintaining smooth drivability and retaining factory safety systems.
Unlike a traditional ECU flash, the JB4 operates through its external connections without requiring the vehicle's ECU to be unlocked or directly reflashed.
Vehicle Fitment
Make: Lexus
Model: LS 500
Model Years: 2018+
Engine: 3.5L V6 Twin Turbo
Fitment:
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2018+ Lexus LS 500 equipped with the 3.5L V6 Twin Turbo engine.
Important: Verify vehicle model, engine configuration, and compatibility before installation.

