550HP Audi S2 Quattro Monster || 5 Inline Turbo Incredible Sound – Oberhallau 2018 Drag & Track by turboandstance - August 30, 2018August 30, 2018 Markus Rockl has been slowly developing this brutal Audi S2 Quattro on the Swiss Hillclimb Championship and during the 2018 Season it has started to catch the attention of fans with its speed and amazing sound. Powered by the Legendary 5 cylinder turbocharged unit from Audi, it is producing here at least over 500Hp although precise official figures are not provided. But given the combination of looks, sound and speed, this is a Monster that will certainly achieve success, among all spectators and all those who have the opportunity to watch it. Leave a comment