Audi S4 B5 1997 - 2002 siemens/continental simos 16 / siemens/continental simos 8.4 / siemens/continental simos 8.5 ECU Remap & Tuning
Power
333 HP / 248 kW
Fuel
Petrol
Version
B5 1997 - 2002 3.0 tfsi 333hp (245kw) 440nm
Model year(s)
1997–2002
Control unit
siemens/continental simos 16 / siemens/continental simos 8.4 / siemens/continental simos 8.5ECU
Kess3 Protocols
Only active dealers can view the KESS3 protocols for this vehicle.
Live ECU tuning for the Audi S4, with measured power and torque gains, a dyno preview, and the supported file options grouped into one focused page.
| Stock | Tuned | Gain | |
|---|---|---|---|
| Power (HP) | 333 | 400 | +67 (+20%) |
| Torque (Nm) | 440 | 520 | +80 (+18%) |
Available tuning options
Performance 2
Tune
Towing | PowerSwitchable Pops and Bangs This option is only available for VW / Audi MED9.1. Also you must disable and remove the Catalytic convertor from the vehicle or it may fail and prevent any audiable pops being heard.
Emissions & anti-pollution 2
EGR off petrol
Decat P0420 will be disabled and P0430 if dual cat.
Driveability & comfort 1
Cylinder on Demand off
Services, files & hardware 5
Clone ECU Must supply reads of original and new ecu's. Must bench read.
High flow turbo charger You must also select towing or power tune.
Send us your ECU Includes standard bench fee processing for 1 ECU and NZ return freight. Include a send in ECU form fully filled out with your ECU.
Return file to original
Checksum correction
Dyno chart
Original HP
Tuned HP
Original Torque
Tuned Torque
Original
Tuned
* Estimated curve, illustrative only, not a measured dyno. Actual values will vary.
Installation and process
Choose the tuning package that fits your goals, confirm the vehicle and ECU, and request your files. AltTune then guides the read, write, and verification steps for your selected vehicle — whether handled remotely with a supported flash tool or on the bench.
Support, safety, and trust
Vehicle condition, maintenance history, fuel quality, and intended use all affect results. We only publish gains we can support for the listed configuration, and we ask that you confirm suitability for your vehicle and application before ordering.
Frequently asked questions
01
Is the Audi S4 B5 1997 - 2002 siemens/continental simos 16 / siemens/continental simos 8.4 / siemens/continental simos 8.5 supported?
This page is generated for an active vehicle in the AltTune catalogue, so it represents a currently supported tuning entry. If your exact ECU differs, contact us to confirm before ordering.
02
What options are available for this vehicle?
The resolved options for this vehicle include Clone ECU, EGR off petrol, High flow turbo charger, Send us your ECU, Tune, Decat. The exact list depends on the vehicle type, fuel, and supported protocols.
03
What gains can I expect?
This vehicle shows gains of up to +67 HP and +80 Nm over the factory figures. Real-world results vary with condition and fuel.
