Heffner Performance is best known for their tuning packages for Lamborghini models. Now though apparently they are trying their hands on the supercar of the the parent company, the Audi R8. What they have in mind for it is very cool! They are going to put two big turbochargers on it which is said to give way more than 600hp on 100 octane fuel. Here’s a clip of the car in talk in development, as it’s doing the dyno test. At this stage it has 536 hp! More details will be released when the car is finished.