Description
Unlock hidden power and elevate your driving experience with the Burger Tuning JB4 for the 2025+ Toyota 4Runner 2.4L Turbo (BETA). Designed as the most advanced and feature-rich tuning system available for the new 4Runner platform, the JB4 delivers up to 75 horsepower at the crank (60hp to the wheels) on a completely stock setup using premium pump fuel.
The JB4 tuner installs seamlessly with a plug-and-play harness, requiring no permanent modifications, ECU unlocks, or previous tuning stages. It instantly transforms your factory-tuned 4Runner into a high-performance SUV with smoother throttle response, increased boost, and dynamic tuning flexibility. Whether you're on pavement or off-road, the JB4 ensures faster acceleration, improved quarter-mile times, and on-the-fly map switching via your factory dashboard.
For those looking to go even further, pairing the JB4 with bolt-on upgrades, higher octane fuel, or ethanol (E85) mixtures can result in even higher horsepower gains. With features such as boost-by-gear control, in-depth data logging, fault code reading, and CANbus integration, this system offers tuning sophistication beyond traditional chips or flash maps.
The optional JB4PRO Bluetooth Adapter and Free JB4PRO App make it easy to wirelessly connect your smartphone, access live performance data, change maps, and receive future firmware updates—all without a laptop.
Key Features:
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Power gains of up to 60 horsepower to the wheels (75 horsepower at the crank) on a stock vehicle
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Plug-and-play installation – no cutting, wiring, or permanent mods
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Preloaded with up to 8 custom tuning maps for various fuel types and mods
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Boost-by-gear tuning for controlled traction in lower gears
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On-the-fly map switching through factory dashboard controls
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CANbus OBDII integration for advanced tuning and performance
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Compatible with both JB4 Mobile and JB4PRO smartphone apps
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View and log up to 20 real-time engine parameters using the app
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Read and delete fault codes without external scanners
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Runs as smoothly as stock during daily driving
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No impact on fuel economy under normal conditions
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Compatible with all factory driving modes
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Not VIN-locked – removable without a trace and resellable
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Includes billet aluminum JB4 enclosure for durability
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91 octane fuel or higher required for optimal performance gains
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Proudly made in the USA with a 5-year warranty
Vehicle Fitment:
Toyota
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2025+ Toyota 4Runner 2.4L Turbocharged Inline-4
Compatible Trims Include:
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SR
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SR5
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TRD Off-Road
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TRD PreRunner
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TRD Sport
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TRD Pro
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Limited
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Platinum
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Trailhunter
What Is the JB4?
The JB4 is a plug-and-play performance tuner designed for turbocharged vehicles. It connects between your vehicle’s sensors and ECU to safely adjust boost, timing, and fueling, delivering a powerful and responsive driving experience. Unlike traditional flash tunes, the JB4 is removable, not VIN-locked, and offers features like Bluetooth connectivity, live data monitoring, CANbus integration, and regular firmware updates for improved performance over time. It’s the gold standard in turbo tuning and the ultimate first modification for your 4Runner.
