Heffner Twin-Turbo Audi R8 V10 Pipes Up

by | Oct 4, 2011 | | 0

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...

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