AUDI TT RS with Performance Exhaust, AUDI S5 with stock Exhaust, AUDI RS6 Conversion with Supersport Exhaust, AUDI R8 V10 5.2 FSI with Custom Exhaust (by Matthias Kieper/kfzteile24.de) & AUDI RS4 with Custom Exhaust (by Matthias Kieper/kfzteile24.de), filmed with Canon 5D mark 2 with extern Røde Microphone and GoPro HD Hero 3 Black Edition.