4). Anytime you do a heavy modification to your car, its a good idea to DYNO tune it. Since more air is being forced into your engine, the fuel has to be adjusted to meet it. DYNO tunning can not only let you know your HP level. But also your fuel curve. Lets say you turbo your car and your first DYNO run you put out 230WHP. If the fuel, cams, valves ext. are tunned properly, you could easily gain another 20-30HP. Its also important to have a boost, fuel, oil, and air/fuel gauges available to monitor your engine.