Heffner Twin Turbo Audi R8 |
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Heffner Performance, the power house from the United States, has released a teaser image of their twin turbo Audi R8. The clip, released on YouTube, includes a shot of the Heffner Twin Turbo Audi R8's engine and a sample of its exhaust note while on the dyno. The tuner is still playing on the safe side... More » |