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All figures shown are typical estimates based on aggregated Stage 1 data. Actual results depend on vehicle condition, mileage, and the chosen tuning method. Always consult a qualified remap professional.

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Jaguar XJ Remap Estimates — Stage 1 BHP & Torque Gains | TorqueIndex

Jaguar XJ vehicle

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Jaguar XJ Tuning Data

Stage 1 estimates for 10 engine variants across 2 generations

2003 - 2009

4.2 V8 SC 400hp

Moderate (5/10)

2009 ->

2.0 SC Turbo 240hp

PetrolTorque-focused

340 → 440+100

DieselPower-focused

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BHP

300 → 330+30

Torque (Nm)

700 → 780+80

Good (6/10)

3.0 V6 SC Turbo 340hp

PetrolPower-focused

PetrolLimited headroom

Limited (3.5/10)

5.0 V8 Supercharged 510hp

R 5.0 V8 Supercharged 550hp

PetrolLimited headroom

Moderate (4.5/10)

R575 5.0 V8 Supercharged 575hp

PetrolLimited headroom

Moderate (5/10)