Jaguar S Type 4.2 V8 300hp ECU Tuning File

The Jaguar S Type 4.2 V8 300hp (All) produces 300bhp and 420Nm in standard form. Our Stage 1 ECU tuning file raises output to 315bhp and 440Nm, a gain of 15bhp and 20Nm, with no hardware modifications required. The file is delivered through the ByteFlash Portal and is ready to write to the vehicle.