This Stage 1 tuning file enhances the iconic 2008 Jaguar XKR-S 4.2i V8 Kompressor, using the Denso MB279700 ECU (SW: 9W8Y-14C570-BNA). Designed for Tiptronic models, this calibration improves throttle precision, delivers a broader torque band, and sharpens performance under supercharged load. Supplied as a full binary for direct flashing via Alientech Kess.