Here at Celtic Tuning we have developed a full range of Jaguar ECU Remapping and Chip tuning services for old and new models alike. Celtic Tunings Jaguar Tuning is custom developed in-house which enables us to tailor it to your requirements and provide the best solutions on the market. Celtic Tuning’s Jaguar ECU Remap will provide a whole host of benefits including increased power, improved drivability and sharper throttle response. With our Jaguar Chip tuning you can also expect to see your Jaguar fuel economy and fuel efficiency improve. After years of development Celtic Tuning has remaps available for both Jaguar Diesel Tuning and Jaguar petrol tuning. Our Jaguar tuning provides an unrivalled driving experience and can easily be installed to your vehicle. Celtic Tuning have performance and economy engine remaps for the majority of the modern Jaguar range, including the S Type (X200), X Type (X400), XF (X250), XF Sportbrake (X250), XF Sportbrake (X250), XJ (X350), XJ (X351), XK (X150) and XK8 (X100) . With all of our custom tuning software written and developed in house on our state of the art 2WD and 4WD dyno cells, you can trust that our software is of the highest standard. If that is not enough then we offer a full insurance backed mechanical breakdown warranty underwritten by AVIVA and a full 14 day money back guarantee.