The s8's have an awesome engine if its the V10 I'm thinking about 0-60 in 5.1 secs - the first thing I would do is get a sports ECU fitted and uprate the fuel system. As you are going for the max you should uprate the bottom end of the engine with harder pistons etc... Fitting bigger valves and getting the head gas flowed will also maximise the power delivery. What I love the most about the s8's is the way the power comes in smooth and steady all the way up the rev range! Handling wise the car is really nicely setup from the factory - but if you can cope with a harder ride then I would go for some adjustable shocks and uprated springs too. A lower ratio gearbox will also increase the acceleration quite a bit as the car is designed for cruising the autobahn instead of sprinting. It is also a pretty heavy car at just under 2 tons so putting it on a diet would be a good idea, look into carbon fibre bonnet and body panels as these are very light and look really cool. Post a question in the Audi section below for some more ideas or more details on these points.
