HP Calculator

The number of cylinders in your engine,

The BASE* fuel pressure you will run (your fuel pressure at idle), *our calculator assumes a 1:1 rising rate fuel pressure regulator for turbo applications

Injector flow size – make sure you select cc/min or lb/hr in the drop down, (The amount of fuel you can supply your engine directly affects the amount of power that engine is capable of producing.)

Engine aspiration, (Turbocharged, Supercharged, and Naturally Aspirated engines have different BSFC’s)

Maximum injector duty cycle (IDC) (In order to be conservative, ASNU recommends a maximum duty cycle of 90%.)

 
Horsepower supported @ crankshaft:  
Horsepower supported @ wheels: