JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
  • Load image into Gallery viewer, JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
  • Load image into Gallery viewer, JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
  • Load image into Gallery viewer, JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
  • Load image into Gallery viewer, JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16
  • Load image into Gallery viewer, JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16

JB4 Piggyback ECU Tuning Box Plug & Play for Audi 2.0 TFSI EA888 Gen 4 261/265 hp 40/45 TFSI, Porsche Macan Base, Group 16

£687.70
£687.70
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.

Unleash the potential of your Audi 2.0 TFSI EA888 Gen 4 with the JB4 Group 16 plug and play tuning box, supplied by Nforcd. Tailored for 261 hp and 265 hp variants including 40 TFSI and 45 TFSI models, the JB4 uses CANbus integration for precise, adjustable performance gains while retaining factory safety systems. Add the optional JB4 PRO Bluetooth Connect kit for in-car map switching, data logging and easy firmware updates.

  • Plug and play piggyback tuner for EA888 Gen 4 2.0 TFSI, including electric assist applications
  • Power gains starting at 50 bhp and 70 ft lb on 95 RON with approximately +4.0 psi over stock on the default map
  • Up to 75 bhp and 90 ft lb possible with supporting bolt-ons, higher octane fuel and boost adjustment via the optional JB4 PRO Bluetooth adapter
  • CANbus integration with direct AFR control and advanced safeguards for boost, fuel trims and knock
  • Preloaded with up to 8 maps, including ethanol E85 compatible options
  • Boost by gear for improved traction in lower gears
  • Integrated water/meth control
  • Read and clear fault codes and view or record up to 40 live engine parameters with the free JB4PRO app when paired with the Bluetooth kit
  • Smooth OEM-like drivability and compatible with all driving modes
  • Fuel economy unchanged during normal driving
  • Not VIN locked and removable without a trace, ideal for resale
  • Rugged billet aluminium enclosure, designed and assembled in the USA
  • 5 year warranty
  • 91 octane or 95 RON or better fuel required for performance gains

Vehicle compatibility

  • 2021+ Audi A4 B9.5 40 TFSI
  • 2021+ Audi A5 B9.5 40 TFSI
  • 2021+ Audi Q5 B9.5 40 TFSI
  • 2021+ Audi A4 B9.5 45 TFSI
  • 2021+ Audi A5 B9.5 45 TFSI
  • 2021+ Audi Q5 B9.5 45 TFSI
  • 2021+ Audi A6 C8 261 hp
  • 2021+ Audi A7 C8 261 hp
  • 2021+ Porsche Macan base

Nforcd knows the JB4 well and it remains a popular, safe and flexible upgrade for modern VAG 2.0 TFSI engines. Order today for a proven, reversible performance boost with simple installation and in-car control. Professional fitting is available at Nforcd in Warwickshire. To request a fitting quote, email Sales@nforcd.com.