Welcome to GT Kraft's Jaguar Xj 2003-x350 Tuning Specifications page. Here, you can select your Jaguar Xj 2003-x350 engine version and explore the best ECU tuning files on the market.
Our tuning files are designed to enhance your vehicle's performance without compromising safety. Our engineers are committed to developing tuning files that push the boundaries of performance while ensuring safety. We offer fast file service for stage 1 & 2, Pop & Bang, stage 3 and 4 projects, and much more.
We also specialize in gearbox/TCU tuning for Jaguar and other brands. Register now and experience the GT Kraft difference in your Jaguar Xj 2003-x350.