JB4 Tuner for Acura
JB4 Tuner for Acura
JB4 Tuner for Acura
JB4 Tuner for Acura
JB4 Tuner for Acura
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JB4 Tuner for Acura

£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 serious performance from your turbocharged Acura with the JB4 plug and play tuning box. Designed for modern Acura engines, this intelligent piggyback works alongside the factory ECU to remap boost, timing and fueling for rapid, reliable gains and reduced turbo lag, all without an ECU flash. Installation is discreet and fully reversible, making it a perfect upgrade for daily drivers and enthusiasts alike.

  • Power gains up to 80whp and 100wtq on 3.0T engines, up to 50whp and 60wtq on 2.0T engines
  • No ECU flash required, compatible with locked ECUs
  • OBDII CANbus integration for real-time data, safety strategies and refined control
  • Multiple performance maps including ethanol compatible options
  • Boost by gear, smoother part-throttle response and OEM-like drivability
  • Read and clear fault codes, log up to 40 parameters and update firmware
  • Optional Bluetooth adapter for smartphone control via the free JB4PRO app
  • Not VIN locked, billet aluminium enclosure, made in the USA with a 5 year warranty

The JB4 taps two easily accessed engine sensors and the OBDII port to monitor key ECU data such as throttle input, ignition timing, fuel trims, air fuel ratio and knock activity. With this depth of information the JB4 can deliver smooth, consistent power while adding safety features including lean and overboost protection. Expect sharper response and improved 0 to 60 and quarter mile performance, while fuel economy during normal driving remains unchanged. Compatible with all factory driving modes.

Vehicle fitment

  • 2024+ Acura Integra Type S 2.0L Turbo
  • 2023+ Acura Integra A-Spec 1.5L Turbo
  • 2021+ Acura TLX Type S 3.0L Turbo
  • 2021+ Acura MDX Type S 3.0L Turbo
  • 2021+ Acura TLX 2.0L Turbo
  • 2019+ Acura RDX 2.0L Turbo

Connect the optional JB4 Bluetooth adapter to pair with your iOS or Android device and use the free JB4PRO app to switch maps, live monitor engine parameters, record datalogs and load new firmware as updates and features are released.

Install guides are available: Acura 1.5L and 2.0L | Acura 3.0L

Nforcd supplies the JB4 for Acura across the UK and knows this upgrade inside out. For best results, run 91 octane fuel or better on performance maps. If you would like professional installation, fitting is available through Nforcd in Warwickshire, request a quote via Sales@nforcd.com.