1. It still only controls based on boost. 2. It still is varying pump speed only to control delivery versus Aquamist that controls an injector and uses a constant speed pump. 3. Their "Boost-Safe" triggers something on failure, versus triggering always and turning off the trigger on failure. Their design is inherently not fail safe. What if the little trigger mechanism or the power fails to the unit. How safe is that when it won't trigger?