Senner Tuning Bumps the Audi RS5’s Output to 506HP

With the Audi RS5, Senner Tuning took all the usual steps: some exterior appointments, upgraded suspension and of course, more power. Starting with the engine modifications, the 4.2-liter direct-injected V8’s output was boosted to 506 hp (+56 ponies) and 478 Nm or (353 lb-ft (+48Nm or 36 lb-ft), by letting it “breathe” more efficiently through a new, valve-controlled stainless steel exhaust

Video: Audi Quattro Concept Meets up with 1984 Quattro Coupe

At this year's Paris Auto Show in October, Audi celebrated the original 1980s Quattro's 30th anniversary by unveiling the Quattro Concept. Soon after, rumors started flowing around that Audi plans to develop a production version of the sports car, which is loosely based on the RS5 Coupe's architecture using a modified version of the RS3 Sportback / TT RS' 2.5-liter turbocharged inline-five with