If you're not sure whether or not you have hydro boost, there are a few things you can look for. First, check your power steering fluid level and make sure it's full. Then, start the engine and turn the steering wheel back and forth to see if the steering feels tight or hard to turn. If it does, then you likely have hydro boost. Finally, take your car for a test drive and pay attention to how the brakes feel. If they feel firm and responsive, then you probably have hydro boost.