I was wondering if i could get some good info on a 2000 s4. It has the apr stage 1 chip, milltek catback, and a few other non performance parts. I want to know what im getting into before i buy it. It has had water pump and belts just replaced, valve cover gaskets done, new coils and plugs, new icm, oil level sensorand oil press. sensor changed. Any and all information will be greatly appreciated.