JB4 for Kia / Hyundai 1.6L Turbo Smartstream 4-cylinder (V3) mercedes-benz-gla-35-amg-2020--esr6909499 USA and NON-USA models have

USA and NON-USA models have different years

The JB4 is a plug-and-play tune for turbocharged vehicles

(+) Plus fine-tune up

Including on the fly in-dash map switching between factory and various performance maps

To use our Bluetooth feature an additional 3rd party app for your Android or Apple phone must be downloaded and can be found here: If you are using an Apple® product the app can be found by clicking here

JB4 for Kia / Hyundai 1.6L Turbo Smartstream 4-cylinder (V3) mercedes-benz-gla-35-amg-2020--esr6909499 USA and NON-USA models havePower gains of up to 40hp & 60tq to the wheels on a stock 1. 6L vehicle The JB4 is a plug and play Kia Hyundai tuner that plugs into easy to access sensors in the engine bay and works with your factory ECU tuning to remap your boost, timing, and fueling for optimal performance and reduced turbo lag. Now includes the JB4PRO adapter and free app built in! Unlike other tuning systems the JB4 includes a fully programmable CANbus system, upgradable