Recognized for their extreme tuning of Lamborghini and Ferrari supercars, Underground Racing unveils the Audi R8 Twin Turbo. Equipped with a 5.2L V10, this German sports car is able to produce 1000+ wheel horsepower with Underground Racing’s twin turbo system.

Heffner Twin-Turbo Audi R8 V10 Pipes Up - 01

via: youtube