JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
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  • Load image into Gallery viewer, JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
  • Load image into Gallery viewer, JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
  • Load image into Gallery viewer, JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+
  • Load image into Gallery viewer, JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+

JB4 V1 Plug and Play Piggyback Tuner with Bluetooth for Kia Stinger 3.3T 2018-2023 and Genesis G70 3.3T 2018+

£778.70
£778.70
£0.00
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Unlock serious performance from your Kia Stinger 3.3L Turbo or Genesis G70 3.3L Turbo with the JB4 Performance Tuner V1. This plug and play piggyback tuning box interfaces with easy-to-reach engine bay sensors and the vehicle CANbus to optimise boost, timing and fueling for quicker spool, stronger midrange and harder acceleration. Now supplied with the JB4PRO Bluetooth adapter and free smartphone app for wireless control and logging.

  • Gains of up to 100whp and 100wtq on an otherwise stock car
  • Plug in installation, fully reversible, not VIN locked and removes without a trace
  • Advanced CANbus integration reads pedal input, throttle position, gear, RPM, AFR, fuel trims, ignition advance and knock to dynamically adjust performance
  • Built in safety strategies including reduced boost until oil and coolant are up to temperature, and automatic low boost fallback if the engine overheats, runs lean, knocks or overboosts
  • Preloaded with up to 8 maps for 91 octane, 93 octane and E85 blend setups
  • Real time data logging with the JB4 app, viewing and recording up to 40 parameters
  • Boost by gear control for 1st to 3rd via the app to help traction and launches
  • Runs as smoothly as stock and is compatible with all driving modes
  • Fuel economy remains unchanged during normal driving
  • Rugged billet aluminium enclosure and free firmware updates as new maps and features are released
  • Read and clear fault codes from within the app

Included JB4PRO smartphone connectivity lets you switch maps, analyse logs and update firmware from your iOS or Android device with the adapter neatly housed inside the JB4 enclosure.

Building a more heavily modified car? An optional JB4PRO board is available, adding built in Bluetooth, integrated ethanol content processing, CPI/WMI control, onboard logging memory, plug and play O2 bias wires, wiring ports for 10 bar pressure sensors for low fuel pressure or coolant pressure monitoring, and optional plug and play EWG harness support, with further features unlocked via free firmware updates.

Platform note: these engines can experience spark blowout at stock and higher boost. If your spark plugs have more than 25k miles, consider fresh plugs when running increased boost.

Vehicle fitment
Kia Stinger GT, GT1, GT2 3.3L Turbo 2018 to 2023
Genesis G70 3.3L Turbo 2018+

Nforcd supplies the JB4 tuner to UK enthusiasts looking for a fast, reversible ECU tuning alternative without opening the ECU. Order online with confidence. Professional fitting is available at Nforcd in Warwickshire. To request a fitting quote, email Sales@nforcd.com.