injectors are flow rated at 3 bar (where most systems are run). But like I mentioned below (or above or somewhere), you need to know at what duty cycle that rating is. Remember our systems stay at a pressure differential of 3 bar, no matter how much boost you are making (that's why the regulator raises the fuel pressure 1 pound per 1 pound of boost). So how much the injector flows at a higher pressure doesn't really give you any useful info. Hope that makes sense, Mark