Porsche 911 (996) 1997-2004 Carrera GT2 483bhp remap figures
The Porsche 911 Carrera GT2 483bhp (1997-2004) is a petrol 3.6L model making 483bhp and 620Nm as standard. After a Stage 1 ECU remap we expect 547bhp and 743Nm - up to 64bhp and 123Nm more than stock.
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 | 483 bhp | 547 bhp | +64 bhp |
| Torque | 620 Nm | 743 Nm | +123 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 483 bhp | 620 Nm | |
| Stage 1Maximum software-only performance | 547 bhp | 743 Nm | +64 bhp +123 Nm |
| Stage 1 EcoPerformance with economy in mind | 531 bhp | 733 Nm | +48 bhp +113 Nm |
| Eco mapEconomy first | 526 bhp | 727 Nm | +43 bhp +107 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 911
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
Engine management is by a Bosch ME7.8 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 Porsche 911 Carrera GT2 483bhp?
We expect 547bhp and 743Nm against 483bhp and 620Nm as standard: up to +64bhp and +123Nm. 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 Porsche 911 Carrera GT2 483bhp?
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: 531bhp and 733Nm expected. The Eco map is economy first: 526bhp and 727Nm. Both still sit above the standard 483bhp and 620Nm.
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 Porsche 911 figures
Other petrol variants
- Turbo S 450bhp 1997-2004
- Carrera 4 Turbo 420bhp 1997-2004
- Turbo 420bhp 1997-2004
- Carrera GT3 381bhp 1997-2004
- Carrera GT3 360bhp 1997-2004
- Carrera 2 40th 345bhp 1997-2004
- Carrera 2 320bhp 1997-2004
- Carrera 300bhp 1997-2004
All petrol 911 (996) variants · 911 (996) 1997-2004 overview · All Porsche figures