Magnuson Supercharger Injector 1GRFE 4.0 (1 Piece)

To ensure your supercharged engine maintains a safe air fuel ratio, proper fuel injector sizing is crucial. Running undersized injectors, in conjunction with a supercharger, can cause detonation and result in damage to your engine. Once balance is achieved, your engine will produce more horsepower, run smother, and last longer. Below, are the guidelines that FAST suggests for finding right fuel injectors for your application.