This calculator provides the required injector sizing in cc/min for your engine combination as well as the total flow in liters per hour for pump sizing.

Number of injectorsthe total number of injectors on your engine
Maximum duty cyclethe maximum time the injector is on vs off. Maximum recommended is 80% of on time.
Fuel type / applicationRefers to the Brake Specific Fuel Consumption for the application. Values used in the calculator are:
Naturally aspirated (gas) 0.5
Forced induction (gas) 0.6
Ethanol 1.08
Methanol 1.2
Target horsepowerthe target horsepower of the engine
cc per minute per injectorinjector sizing required for the engine
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