Your Vehicle
Jaguar S Type 4.2 V8 R 400hp
Technical Specifications
Power and torque increase
Stage 1: software remap only, no mechanical changes, fully reversible.
Stage 1: file 100 € online + installation 700 € at the workshop (on the bench) Book now
Power HP
Torque Nm
Buy the Stage 1 file, pay the installation at the workshop
100 € VAT included: the file developed for your engine, paid online
Installation: 700 € network price, the workshop may charge less, paid at the chosen workshop (on the bench) · terms
Power Graph
Jaguar S Type 4.2 V8 R 400hp: da 400 a 420HP
Remapping Jaguar S Type
MasterTuning develops remapping for Jaguar. La Jaguar S Type 4.2 V8 R 400hp può passare da 400 HP a 420 HP con un incremento di 20 HP.
The development of each remap is customized by MasterTuning.
- 100% customised files with lifetime warranty
- Reference values for Stage 1: the file is developed on your vehicle and checked in the workshop
- Best performance, within safety margins
- Reduced fuel consumption
ECU Remapping Details Jaguar S Type 4.2 V8 R 400hp
The Jaguar S Type 4.2 V8 R 400hp is equipped with a petrol engine that produces 400 HP and 541 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this Jaguar can achieve 420 HP (+5%) and 565 Nm (+4%).
Our Stage 1 tuning for the S Type All delivers an impressive gain of +20 HP and +24 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code AJ34 identifies this specific powerplant configuration. The Denso MB079700 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
With 400 HP from factory, this Jaguar S Type is already a performance vehicle. Our remapping extracts even more potential, delivering exhilarating acceleration and enhanced driving dynamics for enthusiasts who demand the best.
Technical Specifications — Jaguar S Type 4.2 V8 R 400hp
Factory technical data for the Jaguar S Type 4.2 V8 R 400hp (All), used by MasterTuning engineers to develop a remap tailored to this specific powerplant. Figures shown are reference values for Stage 1; the file is developed on your vehicle and checked in the workshop.
| Engine code | AJ34 |
|---|---|
| ECU / Control unit | Denso MB079700 |
| Fuel | Petrol |
| Compression ratio | 11.9 |
| Bore × stroke | 86.0 X 90.3 mm |
| Stock power | 400 HP · 541 Nm |
| Remapped power (Stage 1) | 420 HP (+20) · 565 Nm (+24) |
Don't want to touch the ECU?
Rapid Dimsport add-on modules connect to the engine sensors with original connectors: they fit in a few hours and come off without a trace, leaving the factory software untouched. Useful on a leased car, one still under warranty or one you plan to sell soon. Check which ones fit your Jaguar S Type.
Frequently Asked Questions - Jaguar S Type
How much power can I gain from remapping my Jaguar S Type?
With MasterTuning Stage 1, your Jaguar S Type 4.2 V8 R 400hp can gain +20 HP (from 400 to 420 HP) and +24 Nm of torque. This represents a 5% increase in power.
Which ECU does the Jaguar S Type 4.2 V8 R 400hp use?
The Jaguar S Type 4.2 V8 R 400hp uses the Denso MB079700 engine control unit. MasterTuning recalibrates this ECU for Stage 1 and Stage 2.
What is the engine code of the Jaguar S Type 4.2 V8 R 400hp?
The engine code of the Jaguar S Type 4.2 V8 R 400hp is AJ34. You can find it in the vehicle documents or on the engine plate.
Is ECU remapping safe for the Jaguar S Type engine?
Yes, MasterTuning's remapping for the Jaguar S Type 4.2 V8 R 400hp is developed within safe parameters. Each file is developed on your vehicle, checked in the workshop and stays within the mechanical limits of the AJ34 engine.
Is the Jaguar ECU remapping reversible?
Absolutely. The original factory calibration of your Jaguar S Type is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my Jaguar warranty?
ECU remapping may affect your manufacturer warranty. We recommend checking your specific warranty terms. Many of our customers choose to remap after the warranty period or accept this trade-off for the significant performance gains.
Other Remaps You Might Like
Other Engines Jaguar S Type All
Similar Power Jaguar
Book your remap or ask for a quote
Stage 1 can be bought online and is done at the workshop you choose; for Stage 2 we send you a quote.
Stage 2 is quoted on request: write to us and we will reply with price and timing.
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