Audi S5 (B8) 2007-2011 4.2 FSi 349bhp remap figures
The Audi S5 4.2 FSi 349bhp (2007-2011) is a petrol 4.2L model making 349bhp and 439Nm as standard. After a Stage 1 ECU remap we expect 381bhp and 478Nm - up to 32bhp and 39Nm 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 | 349 bhp | 381 bhp | +32 bhp |
| Torque | 439 Nm | 478 Nm | +39 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 349 bhp | 439 Nm | |
| Stage 1Maximum software-only performance | 381 bhp | 478 Nm | +32 bhp +39 Nm |
| Stage 1 EcoPerformance with economy in mind | 373 bhp | 475 Nm | +24 bhp +36 Nm |
| Eco mapEconomy first | 370 bhp | 473 Nm | +21 bhp +34 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 S5
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 MED9.1.1 engine control 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 Audi S5 4.2 FSi 349bhp?
We expect 381bhp and 478Nm against 349bhp and 439Nm as standard: up to +32bhp and +39Nm. 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 S5 4.2 FSi 349bhp?
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: 373bhp and 475Nm expected. The Eco map is economy first: 370bhp and 473Nm. Both still sit above the standard 349bhp and 439Nm.
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 S5 figures
Other petrol variants
All petrol S5 (B8) variants · S5 (B8) 2007-2017 overview · All Audi figures