Report: Heffner Performance Completes Twin-Turbo Audi R8

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Report: Heffner Performance Completes Twin-Turbo Audi R8
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The team at Heffner Performance have finally completed their initial Stage 1 twin-turbo package for the Audi R8. Running on pump gas and using just 6 psi of boost, the two turbochargers boost output from the 4.2-liter V8 engine from 353 rwhp to 536 rwhp, a gain of over 50 percent. A more powerful 100… Continue Reading...