JB4 for Kia / Hyundai 1.6L Turbo Smartstream 4-cylinder (V3) mercedes-benz-gla-35-amg-2020--esr6909499 The JB4 is a plug-and-play

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

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

and for those interested in an rpm by rpm user adjustable map

BMW / MINI - Magnetic Spark Plug Socket

JB4 for Kia / Hyundai 1.6L Turbo Smartstream 4-cylinder (V3) mercedes-benz-gla-35-amg-2020--esr6909499 The JB4 is a plug-and-playPower 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