Unlock serious performance from your Kia, Hyundai or Genesis 2.0L turbo with the JB4 Performance Tuner V1. This plug and play tuning box works alongside the factory ECU to optimise boost, timing and fuelling for sharper throttle response, reduced turbo lag and impressive gains of up to 80whp and 80wtq on a stock vehicle. Supplied by Nforcd in the UK, this popular upgrade now includes the JB4PRO Bluetooth adapter and free smartphone app, plus a rugged billet aluminium enclosure with fuel control wires preinstalled.
- Gains of up to 80whp and 80wtq on a stock car
- JB4PRO Bluetooth connectivity and free app for iOS and Android included
- Preloaded with up to 8 maps including 91 octane, 93 octane and E85 mixtures
- Advanced CANbus integration for real-time tuning, data logging and safety
- View and record up to 40 live engine parameters via the app
- Boost by gear control in 1st, 2nd and 3rd for improved launches
- Read and delete fault codes directly through the system
- Upgradable firmware as new maps and features are released
- Discreet, quick plug and play installation that can be removed without a trace
- Compatible with all driving modes and normal fuel economy unchanged during everyday driving
- Not VIN locked, designed and assembled in the USA, 5 year warranty
The JB4’s fully programmable CANbus control takes inputs such as pedal position, throttle angle, gear, RPM, fuel trims, AFR, ignition advance and knock, then intelligently adjusts performance mapping. Built-in safeguards keep boost low until oil and coolant are up to temperature and will switch to a low boost map if the engine overheats, runs lean, detects excessive knock or overboosts. Performance maps require 91 octane fuel or better.
Vehicle compatibility
Kia
2018 to 2023 Stinger 2.0L Turbo including GT-Line
2011+ Optima 2.0L Turbo
2016+ Sorento 2.0L Turbo
2016+ Sportage 2.0L Turbo
Hyundai
2011+ Sonata 2.0L Turbo
2019+ Santa Fe 2.0L Turbo
2016+ Tucson 2.0L Turbo
2021+ Elantra 2.0L Turbo
2022+ Kona N 2.0L Turbo
2012+ Veloster 2.0L including Veloster N
2014 to 2016 Genesis Coupe 2.0L Turbo
Genesis
2018+ G80 2.0L Turbo
2018+ G70 2.0L Turbo
Nforcd knows this product well and it has been a firm favourite with customers looking for a simple, reversible power upgrade with proper safety features and app control. Order your JB4 today for fast UK supply. Prefer professional installation? Fitting is available through Nforcd in Warwickshire. Request a quote via Sales@nforcd.com.




