JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
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  • Load image into Gallery viewer, JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
  • Load image into Gallery viewer, JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
  • Load image into Gallery viewer, JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T
  • Load image into Gallery viewer, JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T

JB4 Performance Tuner for Infiniti Q50, Q60, & QX30 2.0T

£687.70
£687.70
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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 real-world performance from your Infiniti 2.0T with the JB4 plug and play tuning box. This advanced piggyback ECU upgrade integrates with factory management via CANbus to optimise boost, timing and fueling, delivering sharper throttle response and reduced turbo lag. On a stock vehicle, gains of up to 40hp and 40tq at the wheels are achievable, all without an ECU flash and with compatibility for locked ECUs. Supplied in the UK by Nforcd for Q50, Q60 and QX30 2.0 turbo models.

  • Up to 40hp and 40tq to the wheels on a stock car
  • Preloaded Infiniti 2.0L calibration with up to 8 selectable performance maps
  • CANbus OBDII integration for enhanced control, safety and smooth OEM-like drivability
  • Ethanol E85 compatible tuning maps
  • Read and clear fault codes, plus live data viewing and logging of up to 40 parameters with the optional app
  • Boost by gear for improved traction and quicker 0-60 and quarter-mile times
  • Exhaust flap control available in most JB4 applications
  • Optional JB4 PRO Bluetooth adapter and free smartphone app for wireless map changes, data logging and free firmware updates
  • No ECU flash required, works with all driving modes, fuel economy unchanged during normal driving
  • Not VIN locked, fully reversible and resale friendly
  • Includes a rugged billet aluminium enclosure, designed and assembled in the USA
  • 91 octane fuel or better required for performance gains
  • Backed by a 5 year warranty

JB4 Map Guide
Map 0: Tuner bypassed
Map 1: Up to 4psi over stock peak, suitable for 91 octane+ fuels
Map 2: Up to 5psi over stock peak, suggested for 93 octane+
Map 3: User-defined fixed boost profile using boost safety as the fixed value over stock
Map 4: Stock power with CANbus active for logging
Map 5: 6.5psi over stock, holds more power to redline, suggested for E30+ or unleaded race fuel
Map 6: Fully user-configurable map, boost over stock set in user adjustments
Map 7: 7psi over stock, for unleaded race fuel
Map 8: Water/meth progressive control, coming soon

Vehicle fitment
- 2016+ Infiniti Q50 2.0L Turbo Pure
- 2016-2022 Infiniti Q60 2.0L Turbo Pure
- 2016-2019 Infiniti QX30 2.0L Turbo

Nforcd knows the JB4 well and it has proven to be a popular, high-value upgrade for Infiniti 2.0T drivers who want flexible, reversible power. Order online today, or contact us for advice on maps and setup. Professional fitting is available through Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.