Audi B6 S4 4.2 V8
Explore real examples of the naturally aspirated S4 V8 on our in-house AWD Dynojet. Talk with us about ECU calibration and measured testing for your car.
Tell us about your transmission, current modifications, fuel and goals. We will confirm the ECU calibration options and quote the work for your specific car. Dyno testing is quoted separately.
Have a warning light or a drivability concern? We can assess it before tuning. Explore our Audi service and diagnostics.
In-house AWD Dynojet testing lets us measure horsepower and torque across the pull. A graph shows how the car delivers its power, not just one peak number.
Find Your Vehicle
Representative U.S.-market examples for this engine platform—not an exhaustive compatibility list. Years shown are model years.
| Vehicle | Example model years | Generation / engine |
|---|---|---|
| Audi S4 Sedan / Avant 4.2 V8 | 2004 | B6 / 8E |
Naturally aspirated 4.2 V8 S4, not the B5 2.7T, later supercharged S4 or RS4 FSI engine.
Final compatibility, unlock requirements and transmission tuning availability are confirmed by VIN, engine, ECU and current software before quoting. Check my vehicle and get a quote.
Measured Example
Horsepower and torque measured at the wheels on our AWD Dynojet.
On the Dyno
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Send your vehicle details and goals. We will confirm the available tuning and testing options and provide a written quote.
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