Innovative Performance Chip/Power Programmer for Jaguar XJ, XJ6, XJ8, XJ12, XJR, XJRS & XJS 3.0L, 3.6L, 4.0L, 4.2L, 5.0L, 5.3L & 6.0L - Improve Fuel Mileage, Increase Horsepower & TQ with this tuner! Boost your Jaguar XJ, XJ6, XJ8, XJ12, XJR, XJRS & XJS's horsepower, torque, throttle response and fuel economy with the advanced Innovative Performance Chip! Safely gain up to +35 HP and up to +5 MPG in fuel mileage in your Jaguar XJ, XJ6, XJ8, XJ12, XJR, XJRS & XJS by safely optimizing your air/fuel ratio and timing curve for increased efficiency! Easily installs in less than 15 minutes, with absolutely no mechanical experience required! All Jaguar XJ, XJ6, XJ8, XJ12, XJR, XJRS & XJS performance chips come with an installation kit, including detailed installation instructions with easy to follow step-by-step pictures! Our award-winning 5 star technical staff is here to guide you and help with any questions that you may have. Makes NO permanent changes to your Jaguar XJ, XJ6, XJ8, XJ12, XJR, XJRS & XJS's computer! It will not void your Jaguar factory warranty, and it's completely emissions safe. compatible with all trims, including 100, Base, C, Classic Collection, Collection Rouge, Executive, L, L Portfolio, L Supercharged, L Supersport, L Ultimate, Majestic, Portfolio, SC, Sovereign, Sport, Super V8, Supercharged, Supersport and Vanden Plas models with 3.0L, 3.6L, 4.0L, 4.2L, 5.0L, 5.3L and 6.0L engines. We strived to create the most high quality product in every aspect, delivering you the most affordable product without sacrificing quality. All Jaguar XJ, XJ6, XJ8, XJ12, XJR, XJRS & XJS performance chips feature a high-end aluminum enclosure with an extremely durable, high quality anodized finish. It's a thousand tiny details that add up to something big. All Jaguar XJ, XJ6, XJ8, XJ12, XJR, XJRS & XJS performance chips are proudly backed by our unmatched 100% Money-Back Guarantee & Lifetime Warranty! A properly maintained vehicle is required for the performance chip to function as intended and advertised. Results may vary.