Choosing Injectors

Given a horsepower target, how much injector flow do you need? Fortunately there are calculators on the web to help you figure it out:

• http://www.rceng.com/technical.htm
• http://www.injector.com/injectorselection.php
• http://www.witchhunter.com/injectorcalc1.php4

Making maximum horsepower requires burning the maximum amount of air and fuel. Getting more air into the motor is the job of the intake system; getting fuel into the motor is the job of the fuel system.

Given a horsepower target, how much injector flow do you need? Fortunately there are two online calculators to help you figure it out. http://www.rceng.com/technical.htm http://www.injector.com/injectorselection.php

Note that a larger fuel pump may be necessary to get the rated capacity from upgraded injectors.