Audi S8 (D2) 1999-2002 4.2 V8 40v 360bhp remap figures
The Audi S8 4.2 V8 40v 360bhp (1999-2002) is a petrol 4.2L model making 360bhp and 430Nm as standard. After a Stage 1 ECU remap we expect 385bhp and 482Nm - up to 25bhp and 52Nm 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 | 360 bhp | 385 bhp | +25 bhp |
| Torque | 430 Nm | 482 Nm | +52 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 360 bhp | 430 Nm | |
| Stage 1Maximum software-only performance | 385 bhp | 482 Nm | +25 bhp +52 Nm |
| Stage 1 EcoPerformance with economy in mind | 379 bhp | 478 Nm | +19 bhp +48 Nm |
| Eco mapEconomy first | 377 bhp | 475 Nm | +17 bhp +45 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 S8
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.
This car is listed with a Bosch ME7 engine control 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 Audi S8 4.2 V8 40v 360bhp?
We expect 385bhp and 482Nm against 360bhp and 430Nm as standard: up to +25bhp and +52Nm. 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 Audi S8 4.2 V8 40v 360bhp?
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: 379bhp and 478Nm expected. The Eco map is economy first: 377bhp and 475Nm. Both still sit above the standard 360bhp and 430Nm.
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 Audi S8 figures
Other petrol variants
All petrol S8 (D2) variants · S8 (D2) 1994-2002 overview · All Audi figures