Selecting the proper size injector
This guideline can help in determining what injector
size to use.
* Brake Specific Fuel Consumption: is the amount of fuel consumed (in
lbs. per hour) for each horsepower made. This should be .45 to .50 for
naturally aspirated engines, .55 to .60 for supercharged engines,
and .60 to .65 for turbocharged engines.
** Maximum Injector Duty Cycle should be around 80% max for safe operation.
This allows for some future horsepower increases.
Fuel Pressure Modification
By changing your fuel pressure, you can change the flow rates of your
For example: An injector that flows 330 cc @ 40 psi will flow 369
cc @ 50 psi.