Maserati Gransport 2004-2007 4.2 V8 Spyder 394bhp remap figures
Thinking of remapping a Maserati Gransport 4.2 V8 Spyder 394bhp? The standard car makes 394bhp and 452Nm; with a Stage 1 remap from our Leicester workshop we expect around 435bhp and 490Nm, up to +41bhp and +38Nm.
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 | 394 bhp | 435 bhp | +41 bhp |
| Torque | 452 Nm | 490 Nm | +38 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 394 bhp | 452 Nm | |
| Stage 1Maximum software-only performance | 435 bhp | 490 Nm | +41 bhp +38 Nm |
| Stage 1 EcoPerformance with economy in mind | 425 bhp | 487 Nm | +31 bhp +35 Nm |
| Eco mapEconomy first | 421 bhp | 485 Nm | +27 bhp +33 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 Gransport
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. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
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 Gransport 4.2 V8 Spyder 394bhp?
We expect 435bhp and 490Nm against 394bhp and 452Nm as standard: up to +41bhp and +38Nm. 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 Gransport 4.2 V8 Spyder 394bhp?
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: 425bhp and 487Nm expected. The Eco map is economy first: 421bhp and 485Nm. Both still sit above the standard 394bhp and 452Nm.
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 Gransport figures
Other petrol variants
All petrol Gransport variants · Gransport 2004-2007 overview · All Maserati figures