Fuel injectors are one of the critical aspects to making power and making it safely. If you have too small of an injector for your given application you will not be making all the power you could be for one reason. You will be running too lean which is not only bad for power, but over long periods of time or under the wrong conditions, can be catastrophic to your engine. Fuel alone does not make power, simply adding larger injectors when the engine doesn't need it, will not make power. For a better understanding of injectors, read our article we wrote to help explain. Read, The Thirst of Power.