Use this Injector calculator to correctly size your Injectors vs your Horsepower Goal.
**Also makes a great “Dyno Sheet” Lie Detector!**

When buying injectors keep an 80% Injector Duty Cycle limit.
90% IDC is considerd the Maximum Safe Limit. If your IDC is more than 90% your Injectors are too small!

# of Cylinders

Fuel Pressure (psi)

Injector full flow value (size) in CC/Min

Engine Aspiration
Naturally AspiratedSuperchargedTurbocharged

Duty Cycle
80%85%90%95%100%

Fuel Used
GasolineE85