Heffner Audi R8 Twin Turbo









Heffner Performance has finally finished their R8 Twin-Turbo package, which manages a nice 536 HP at the rear wheels (check out the dyno sheet below.) This is while running on only 6 psi of boost. Heffner promises they are working on an R8 V10 version of the twin-turbo package as well, which should be coming soon.
 
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