JB4 for Hyundai 1.6T SmartStream i20N (BETA)

£599.99

UPDATE - We have now tested on our Demo Car with the following results:

MAP1 +2.5PSI made 230.5bhp & 263.2ft lb

MAP2 +4PSI made 235.3bhp & 287.3ft lb  

The JB4 is a plug and play Kia / Hyundai / Genesis 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. 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. It's able to auto-detect between 1.6L and 2.5L turbo engines automatically allowing for simple plug and play installation across the entire Kia / Hyundai turbocharged lineup! 

Unlike other tuning systems the JB4 includes a fully programmable CANbus system, upgradable firmware, and data logging capability. CANbus allows the JB4 to take into account pedal input, throttle position, gear, engine speed, air/fuel ratio, fuel trims, ignition advance, knock, and many other factors and incorporate those into the performance mapping. It can also read/delete fault codes, includes unique safety features such as keeping boost pressure low until oil and water is up to temperature to provide proper engine and turbo lucubration and drop to a low boost map if the engine starts to overheat, run lean, excessively knock, or over boost. 

The JB4 offers a lot more performance, functionality, and safety than your average performance chip.

The default JB4 map1 runs 4psi over stock peak and tuned maps including stock and valet mode can be selected on the fly using a BMS diagnostics cable or JB4 mobile smartphone adapter.

Installation is very discrete and it quickly removes without a trace when needed. Includes maps for 91 octane, 93 octane, and E85 (ethanol fuel) mixtures. Fuel economy during normal driving is unchanged. Compatible with all driving modes. Made in the USA. 5 year warranty.


NOTE: This BETA system includes retrofit MAP connectors. The retrofit connectors do not have the usual retaining clips and instead are secured by friction and/or included zip-ties. Once we are able to source the correct connectors with retaining clips they will be provided to BETA customers free of charge.

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.

Downloads: 

The JB4 interface software is available here: 

Interface Software

Software Installation Instructions

Apple App for Wireless Interface:  iOS App

Android App for Wireless Intrerface: Android App