JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
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  • Load image into Gallery viewer, JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
  • Load image into Gallery viewer, JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
  • Load image into Gallery viewer, JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S
  • Load image into Gallery viewer, JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S

JB4 Plug and Play Piggyback ECU Tuning Box for Porsche 911 2017-on Carrera, Carrera S, Carrera T, GTS, Targa 4 and Targa 4S

£1,039.99
£1,039.99
£1,199.00
Sold out
Tax included. Shipping calculated at checkout.

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 2017+ Porsche 911 Carrera with the JB4 plug and play tuning box. This advanced piggyback ECU module works alongside the factory DME to recalibrate boost, ignition timing and fuelling, sharpening throttle response and cutting turbo lag. On a stock car, gains of up to 40 hp and 60 lb ft at the wheels are achievable while retaining OEM smoothness and drivability. Supplied by Nforcd in the UK.

  • Plug and play installation with discreet fit and quick, trace-free removal
  • Includes SENT sensor technology for correct integration on the latest Porsche platforms
  • Full CANbus OBDII integration to reference real-time engine data in the tuning strategy
  • Built-in safety logic keeps boost low until oil and coolant are up to temperature and reverts to a low-boost map if the engine overheats, runs lean, knocks, or overboosts
  • Preloaded JB4 software with up to 8 selectable maps for different fuels and modification levels
  • Ethanol-compatible mapping with fuel control for ethanol mixture tuning
  • Compatible with the optional JB4 PRO Bluetooth smartphone connection and JB4PRO app for on-the-fly map changes, data logging, firmware updates and viewing up to 40 live parameters
  • Boost-by-gear control in 1st, 2nd and 3rd via the app to help optimise launches
  • Read and clear fault codes directly through the JB4 system
  • Improves 0-60 and quarter-mile performance while keeping fuel economy unchanged during normal driving
  • Works with all factory driving modes and is not VIN locked
  • Rugged billet aluminium enclosure for durability
  • 91 octane fuel or better required for performance gains
  • Designed and assembled in the USA and backed by a 5-year warranty

Vehicle fitment: 2017+ Porsche Carrera, Carrera S, Carrera Cab, Carrera T, Carrera GTS, Targa 4 and Targa 4S.

Choose Nforcd for expert advice and fast UK supply of JB4 Porsche tuning modules. Ready to install yourself or prefer professional fitting? Fitting is available at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com and take your Porsche to the next level.