source: ABT Sportsline A quarter century ago, the first Audi RS model saw the light of day. With its 315 HP (232 kW) – which was outrageously powerful at the time, the sporty Avant naturally was a great temptation for ABT Sportsline as well. The impressive ingredients for the performance boost were a stainless steel exhaust system, a modified turbocharger and an adjustable camshaft. This resulted in a power boost up to 360 HP (265 kW). If horsepower were a currency, one would have ...