Your Vehicle
Maserati GranTurismo 4.2 V8 405hp
Technical Specifications
Power and torque increase
Stage 1: software remap only, no mechanical changes, fully reversible.
Stage 1: file 100 € online + installation 350 € at the workshop (via the OBD port) 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: 350 € network price, the workshop may charge less, paid at the chosen workshop (via the OBD port) · terms
Power Graph
Maserati GranTurismo 4.2 V8 405hp: da 405 a 430HP
Remapping Maserati GranTurismo
MasterTuning develops remapping for Maserati. La Maserati GranTurismo 4.2 V8 405hp può passare da 405 HP a 430 HP con un incremento di 25 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 Maserati GranTurismo 4.2 V8 405hp
The Maserati GranTurismo 4.2 V8 405hp is equipped with a petrol engine that produces 405 HP and 460 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this Maserati can achieve 430 HP (+6%) and 495 Nm (+8%).
Our Stage 1 tuning for the GranTurismo 2007 - 2016 delivers an impressive gain of +25 HP and +35 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code M 139P identifies this specific powerplant configuration. The Bosch ME7.3.2 / Bosch ME9.1.1 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
With 405 HP from factory, this Maserati GranTurismo 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 — Maserati GranTurismo 4.2 V8 405hp
Factory technical data for the Maserati GranTurismo 4.2 V8 405hp (2007 - 2016), 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 | M 139P |
|---|---|
| ECU / Control unit | Bosch ME7.3.2 / Bosch ME9.1.1 |
| Fuel | Petrol |
| Compression ratio | 11.0 |
| Bore × stroke | 92.0 X 80.0 mm |
| Stock power | 405 HP · 460 Nm |
| Remapped power (Stage 1) | 430 HP (+25) · 495 Nm (+35) |
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 Maserati GranTurismo.
Frequently Asked Questions - Maserati GranTurismo
How much power can I gain from remapping my Maserati GranTurismo?
With MasterTuning Stage 1, your Maserati GranTurismo 4.2 V8 405hp can gain +25 HP (from 405 to 430 HP) and +35 Nm of torque. This represents a 6% increase in power.
Which ECU does the Maserati GranTurismo 4.2 V8 405hp use?
The Maserati GranTurismo 4.2 V8 405hp uses the Bosch ME7.3.2 / Bosch ME9.1.1 engine control unit. MasterTuning recalibrates this ECU for Stage 1 and Stage 2.
What is the engine code of the Maserati GranTurismo 4.2 V8 405hp?
The engine code of the Maserati GranTurismo 4.2 V8 405hp is M 139P. You can find it in the vehicle documents or on the engine plate.
Is ECU remapping safe for the Maserati GranTurismo engine?
Yes, MasterTuning's remapping for the Maserati GranTurismo 4.2 V8 405hp is developed within safe parameters. Each file is developed on your vehicle, checked in the workshop and stays within the mechanical limits of the M 139P engine.
Is the Maserati ECU remapping reversible?
Absolutely. The original factory calibration of your Maserati GranTurismo is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my Maserati 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.
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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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