Your Vehicle
Maserati Coupé GT 4.2 V8 390hp
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 Coupé GT 4.2 V8 390hp: da 390 a 420HP
Remapping Maserati Coupé
MasterTuning develops remapping for Maserati. La Maserati Coupé GT 4.2 V8 390hp può passare da 390 HP a 420 HP con un incremento di 30 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 Coupé GT 4.2 V8 390hp
The Maserati Coupé GT 4.2 V8 390hp is equipped with a petrol engine that produces 390 HP and 451 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this Maserati can achieve 420 HP (+8%) and 475 Nm (+5%).
Our Stage 1 tuning for the Coupé 2002 - 2007 delivers an impressive gain of +30 HP and +24 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code M 138 identifies this specific powerplant configuration. The Bosch ME7.3.2 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
With 390 HP from factory, this Maserati Coupé 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 Coupé GT 4.2 V8 390hp
Factory technical data for the Maserati Coupé GT 4.2 V8 390hp (2002 - 2007), 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 138 |
|---|---|
| ECU / Control unit | Bosch ME7.3.2 |
| Fuel | Petrol |
| Compression ratio | 11.1 |
| Bore × stroke | 92.0 X 80.0 mm |
| Stock power | 390 HP · 451 Nm |
| Remapped power (Stage 1) | 420 HP (+30) · 475 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 Maserati Coupé.
Frequently Asked Questions - Maserati Coupé
How much power can I gain from remapping my Maserati Coupé?
With MasterTuning Stage 1, your Maserati Coupé GT 4.2 V8 390hp can gain +30 HP (from 390 to 420 HP) and +24 Nm of torque. This represents a 8% increase in power.
Which ECU does the Maserati Coupé GT 4.2 V8 390hp use?
The Maserati Coupé GT 4.2 V8 390hp uses the Bosch ME7.3.2 engine control unit. MasterTuning recalibrates this ECU for Stage 1 and Stage 2.
What is the engine code of the Maserati Coupé GT 4.2 V8 390hp?
The engine code of the Maserati Coupé GT 4.2 V8 390hp is M 138. You can find it in the vehicle documents or on the engine plate.
Is ECU remapping safe for the Maserati Coupé engine?
Yes, MasterTuning's remapping for the Maserati Coupé GT 4.2 V8 390hp 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 138 engine.
Is the Maserati ECU remapping reversible?
Absolutely. The original factory calibration of your Maserati Coupé 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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