Heffner has provided images of its upcoming twin-turbo package for the V-8-powerd Audi R8. Pushing six psi of boost, the Heffner R8 produces 536 at-wheel horsepower, although it predicts that it will make 600 using 100-octane fuel. For comparison, the stock V-10-powered R8 5.2 FSI produces 520 hp at the crank. Heffner estimates that its latest project should be able to rip down the quarter mile in just less than 11 seconds.
[via WorldCarFans.com]
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