Sportec RS425 Audi S4 Avant

Sportec, a tuning firm from Switzerland, has modified the Audi S4 Avant to produce more than 400 PS.

Thanks to the newly programmed ECU and the installation of a new sports filter, the Sportec RS425 Audi S4 Avant 3.0-liter V6 compressor engine produces 425 PS instead of the standard 333 PS.

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ABT Sportsline Audi S4

ABT Sportsline of Germany, has released its ABT POWER tuning package for the Audi S4 that increases the output of the stock 333 hp (245 kW) 3.0-liter TFSI V6 engine to 435 hp (320 kW).

With the increase of power, the ABT Sportsline Audi S4 accelerates from 0 to 100 km/h in 4.6 seconds, 0.5 seconds faster from the stock 5.1 seconds. The V-max (top speed) limit has also been removed to enable the S4 to achieve the top speed of 282 km/h, 32 km/h more than the stock S4.

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MTM Audi S4 Avant 3.0 TFSI

Motoren Technik Mayer (MTM) of Germany has unveiled its custom Audi S4 Avant 3.0 TFSI that produces 430 hp (317 kW) and 515 Nm at 4,760 rpm out of the stock 333 hp V6 engine.

The figures above are made possible thanks to the MTM M-Cantronic system and MTM 4-pipe oval exhaust system with different optics.

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