Maserati Granturismo 2007> 4.2 V8 399bhp remap figures
Stock, this 2007> Maserati Granturismo petrol (4.2L) produces 399bhp and 460Nm. Our expected figures for a Stage 1 remap are 424bhp and 516Nm, an expected gain of up to 25bhp and 56Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 399 bhp | 424 bhp | +25 bhp |
| Torque | 460 Nm | 516 Nm | +56 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 399 bhp | 460 Nm | |
| Stage 1Maximum software-only performance | 424 bhp | 516 Nm | +25 bhp +56 Nm |
| Stage 1 EcoPerformance with economy in mind | 418 bhp | 512 Nm | +19 bhp +52 Nm |
| Eco mapEconomy first | 416 bhp | 509 Nm | +17 bhp +49 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your Granturismo
Naturally aspirated petrol engines have no boost to raise, so gains from software alone are more modest than on a turbocharged car and come from fuelling, ignition and throttle response.
Engine management is by a Bosch ME7.3.2 unit. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Maserati Granturismo 4.2 V8 399bhp?
We expect 424bhp and 516Nm against 399bhp and 460Nm as standard: up to +25bhp and +56Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Maserati Granturismo 4.2 V8 399bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 418bhp and 512Nm expected. The Eco map is economy first: 416bhp and 509Nm. Both still sit above the standard 399bhp and 460Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More Maserati Granturismo figures
Other petrol variants
All petrol Granturismo variants · Granturismo 2007> overview · All Maserati figures