Lexus JB4 Tuner

This plug and play tuner attaches to easy to access sensors in your Lexus engine bay and works with your factory DME tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. It features a 64mhz processor allowing sensors to be sampled 800 times per second using dedicated 10 bit digital to analog converters, ensuring smooth and powerful performance.

For the IS200 power gains are up to 45 crank horsepower and up to 45 crank torque over stock, at the default map1 setting. With race gas or E85 mixtures higher power gains are possible. Boost is adjustable using a BMS Data Cable or Bluetooth adapter. Includes fully OBDII based CANbus operation for unrivaled tuning performance, features, and functionality.

Installation is very discrete and it quickly removes without a trace when needed. Fuel economy during normal driving is unchanged.

Wirelessly connect the JB4 to your Bluetooth 4.0 compatible iOS and Android device via the JB4 Mobile connect kit, or to your Windows laptop with the BMS data cable. Both options allow you to record and analyze vehicle and tuning data, change JB4 performance maps, and update JB4 firmware as we release free newer versions with updates, more powerful maps, and new features under development. Separate JB4 Mobile app purchase also required.

FEATURES AND BENEFITS

• Increases horsepower/torque making your Lexus faster
• Quick Plug & Play Installation
• CANbus integration offering unrivaled tuning features and performance
• Runs as smoothly as stock, this is how your Lexus should have come from the factory
• Compatible with all driving modes
• Fuel economy unchanged during normal driving
• Compatible with JB4 Mobile for smartphone logging, tuning changes, and adjustment
• Ethanol (E85) compatible tuning maps
• Able to read/delete fault codes
• Not VIN locked, can be removed without a trace and resold down the road
• Made in the USA
• Free USA Shipping
• 5 year warranty

APPLICATIONS

• 2016+ Lexus RC200t
• 2016+ Lexus IS200t
• 2016+ Lexus GS200t
• 2016+ Lexus IS300t
• 2016+ Lexus NS200t
• 2015+ Lexus NX200t
• 2018+ NX300

DYNO RESULTS

2016 Lexus IS 200t stock vs. BMS JB4 tune, default settings

INSTALL GUIDE

• Download JB4 Install Guide
• Download JB4 iPhone App
• Download JB4 Android App