Power gains up to 100whp on a stock vehicle without the risks of flashing! The JB4 plug and play tuner attaches to sensors in the engine bay and works with your factory ECU tuning to remap boost, timing, and fueling for optimal performance and reduced turbo lag.

Available for both the 2.0L turbocharged and 3.5L supercharged models, power gains of 60-100hp to the wheels are possible! This is how your Emira should have come from the factory.No ECU flash needed and compatible with locked ECUs Wirelessly Connect to your JB4: Includes our all new JB4PRO Bluetooth adapter and free app!

The JB4PRO app allows 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. The JB4PRO Free app features an intuitive easy-to-use interface, help buttons, and advanced log analysis tools that can estimate the performance of your car and help identify any tuning concerns.