Jaguar XJ 5.0 V8 385 hp — Stage 1 file (+20 hp)
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Stage 1 file for Jaguar XJ 5.0 V8 385 hp
Target +0 hp. Custom development for your engine.
Chip tuning for Jaguar XJ 5.0 V8 385 hp ECU
Jaguar XJ (2003 - X350) 5.0 V8 385 hp — premium petrol engine of the passenger segment of the Tata Motors (Jaguar Land Rover) group (Великобритания, 1922). Stage 1 chip tuning raises power from 385 to 405 hp (+20 hp, +5%) and torque from 515 to 535 Nm (+20 Nm). ECU — Denso P5.0SC. Flashing method: OBD or Bench depending on the unit's protection. The 2003 generation — old-era petrol ECUs (ME7/ME9/MED9/Simos) with easily readable memory.
Jaguar is a British premium manufacturer, founded in 1922. Jaguar has been part of Tata Motors via Jaguar Land Rover (JLR) since 2008. Jaguar specialises in premium saloons, roadsters and SUVs. Jaguar's petrol range spans turbocharged Ingenium units and supercharged V6/V8 engines. The supercharged Jaguar V8 has significant potential with hardware upgrades. Jaguar shares some ECUs with Ford (a Visteon legacy).
The Jaguar community is a premium chip tuning niche in the UK and Europe. The supercharged Jaguar V8 comfortably reaches Stage 2 with the right hardware. The top Jaguar SVR engines (supercharged V8) mark the ceiling of British premium performance.
Frequently asked questions
How many horsepower does the Jaguar XJ 5.0 V8 385 hp reach after a remap?
After Stage 1 the power of the Jaguar XJ 5.0 V8 385 hp rises from 385 to 405 hp, a gain of 20 hp (+5%). Torque rises from 515 to 535 Nm (+20 Nm).
How does Stage 1 differ from stock on the Jaguar XJ?
Stage 1 is a software optimization of the factory ECU firmware of the Jaguar XJ with no hardware changes. The injection, boost, ignition-timing and torque maps are reprogrammed. The gain is +20 hp with no hardware changes.
Does Stage 1 make sense on the Jaguar XJ 5.0 V8 385 hp with this much power?
Stage 1 for the Jaguar XJ 5.0 V8 385 hp unlocks the potential built in by the factory but artificially capped to meet mass-market targets. A base of 750-800 hp is achievable once hardware is added.
What is Stage 2 for the Jaguar XJ 5.0 V8 385 hp?
Stage 2 on the Jaguar XJ 5.0 V8 385 hp means software + hardware (exhaust, intake, intercooler). The gain depends on the specific hardware combination.
What ECU platform does the Jaguar XJ 5.0 V8 385 hp use?
The Jaguar XJ 5.0 V8 385 hp is fitted with the Denso P5.0SC ECU. The read method depends on the unit's protection: OBD, Bench via BDM, or Boot mode.
Does the factory warranty of the Jaguar XJ remain valid after Stage 1?
After remapping the Jaguar XJ, the official factory warranty on the engine and gearbox is lost (this applies to any manufacturer when the ECU is modified). CHIPOK guarantees the quality of the calibration and free revisions.
How long is the wait for a Stage 1 remap for the Jaguar XJ?
Reading and writing via OBD takes 25-30 minutes on the Jaguar XJ. Bench reading (BDM/JTAG) takes about 60 minutes plus refitting. Remote file processing at CHIPOK takes 5-30 minutes.
How do you roll back to the factory firmware of the Jaguar XJ?
Before Stage 1 the original of the Jaguar XJ 5.0 V8 385 hp is read out and saved — returning to the factory state is possible at any time.
How much does chip tuning the Jaguar XJ 5.0 V8 385 hp cost?
The remap price for the Jaguar XJ 5.0 V8 385 hp is dynamic and is calculated in the CHIPOK calculator based on the selected options. A credit-based payment model, with no subscription fees.