Power gains of up to 100HP to the wheel on a stock Supra without the risks of flashing!

The JB4 tuner for the Toyota GR Supra Mk5 is the most advanced plug-and-play tuning system available for the turbocharged Supra platform. Power gains of up to 80 horsepower to the wheels (100hp crank) are possible on a completely stock vehicle running pump gas with the B58 engine.

Vehicles equipped with bolt-on upgrades, higher octane fuel, E85 mixtures, or upgraded turbochargers can achieve even greater gains. Now includes the JB4PRO adapter and free app built in!

No ECU flash required and fully compatible with locked 🔒 ECUs.

The JB4 features a simple plug-and-play installation harness allowing fast installation and removal while delivering advanced tuning capabilities unavailable with other tuning systems. Features include map switching between stock and performance maps, optional boost gauge displays, boost-by-gear control for improved traction, progressive water/methanol integration, built-in data logging, fault code reading and clearing, optional electronic wastegate control, exhaust flapper control, and many additional advanced tuning features.

Unlike ECU flash tunes, the JB4 requires no staged upgrades or supporting modifications. Install it as your first upgrade and immediately experience stronger acceleration, faster turbo response, and smoother power delivery.

Note: In-dash commands have not yet been developed for the Supra JB4.

PLEASE NOTE: All BMS products are considered final sale and are not eligible for return.

This item DOES NOT ship to California. If you order this and have a California address - your order will be cancelled and refunded, less a 5% processing fee (the fee we incur when you place an order). Thank you for understanding.

Burger Motorsports - JB4 Tuner, MKV Toyota Supra GR A90 / A91

Name: Burger Motorsports - JB4 Tuner, MKV Toyota Supra GR A90 / A91
Brand: Burger Motorsports
Price: 599 USD
Availability: InStock

From $599.00

Which Version JB4 Tuner?

Quantity

• Power gains of up to 100 horsepower to the wheels on a stock vehicle
• Improves 0-60 times and 1/4 mile times
• Preloaded with custom JB4 Supra tuning software and up to 8 maps for various fuel and modification levels
• Ethanol (E85) compatible tuning maps up to E30
• Able to read/delete fault codes
• View and record up to 40 gauges/engine parameters in real-time with the JB4 app.
• Boost by gear in 1st, 2nd, and 3rd can be controlled via the JB4 app for a perfect launch
• Compatible with JB4PRO app for smartphone logging, tuning changes, and adjustment
• The JB4 offers a lot more performance, functionality, and safety than your average performance chip
• Quick Plug & Play Installation
• CANbus OBDII integration offering unrivaled tuning features and performance
• Improved performance over non-integrated chip tunes
• Runs as smoothly as stock. This is how your vehicle should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• 91 octane fuel or better required for performance gains
• Not VIN locked and can be removed without a trace and resold down the road
• Includes the rugged JB4 billet aluminum enclosure for protection
• Designed and assembled in the USA
• 5 year warranty
2020-2026 Toyota GR Supra Mk5 B58 3.0L inline-6

2020-2026 Toyota GR Supra Mk5 B48 2.0L turbo 4-cylinder
What is a JB4?

The JB4 is a plug and play performance tuner designed for turbocharged vehicles. It installs between the engine sensors and the factory ECU allowing it to safely manipulate boost pressure, ignition timing, and fueling to deliver substantial horsepower gains while retaining factory safety systems.The JB4 separates itself from other tuning systems with advanced CANbus integration, smartphone connectivity, ethanol compatibility, and continuous firmware updates that expand features and performance over time.The JB4 system is not VIN locked and can easily be transferred to another vehicle or resold later. The JB4 has been the gold standard in plug and play turbocharged tuning for over a decade and is used in more than 67 countries worldwide.

Is the JB4 a real tune?

Yes the JB4 is a real tune. By tapping into specific sensors and CANbus for real time vehicle data the JB4 is able to alter your boost, timing, AFR, and/or fuel trims, to a similar degree an ECU reflash would, but without the vehicle ever knowing its been tuned. The result is safe, smooth, and significant power and torque gains while retaining your factory safety systems and without having to unlock/flag your ECU.

Is the JB4 a real tune?

Yes. The JB4 actively adjusts boost pressure, ignition timing, air-fuel ratios, and fuel trims using real-time engine data through its CANbus connection. This allows the JB4 to deliver performance gains similar to ECU flash tuning without permanently modifying the ECU.

Additional FAQs