Fuel Injector Sizing & Duty Cycle Calculator

Precision engine fueling metrics for high-performance builds.

Engine Parameters

Target Horsepower

BSFC (Brake Specific Fuel Consumption)

Number of Cylinders

Injector Flow Rating

Duty Cycle Analysis

Calculated Duty Cycle

Req. Flow (lb/hr)

0.0

Req. Flow (cc/min)

0.0

Note on Safety

It is standard industry practice to maintain a maximum duty cycle of 80-85%. Exceeding 90% risks injector overheating and inconsistent fueling patterns which can lead to engine damage.