Vehicle details

Jaguar XK84.2 R 400 bhp

Jaguar
Available Services
Rev Limit removal
  • Model

    Jaguar XK8

  • Variant

    4.2 R 400 bhp

  • Years

    1996-2005

  • Fuel

    Petrol

  • Engine Size

    4196

  • ECU Type

    Denso

Celtic Tuning's economy software is designed to improve fuel efficiency during normal daily driving, specifically under part-throttle conditions.

It delivers a smoother power curve and improved fuel economy, though actual savings and performance gains will depend on factors such as driving style, road conditions, and vehicle load.

Original Modified Difference
400

bhp

430

bhp

+30

bhp

553

Nm

594

Nm

+41

Nm

Stage Notes

This Stage 1 ECU remap, developed by Celtic Tuning, is designed to safely improve your vehicle's power and torque whilst maintaining standard components and remaining within tolerances.

It's the perfect balance of increased power and day-to-day usability, which is ideal for those who want extra performance but not at the cost of additional hardware or reliability.