Fuel Solenoid Control Output - Only available when Progressive Nitrous Control is enabled. This allows for separate control over the Nitrous Solenoid and Fuel Solenoid in Wet Progressive Nitrous kits, and the ability to pulse them at a different duty cycle through the progressive ramp range.

Frequency - The PWM switching frequency for fuel solenoids

Output - Select available output wires. Typically a HCO (High Current Output - 8A or 25A, depending on your solenoid) is used if driving the solenoid directly due to the high current draw of nitrous solenoids. A DPO (Digital Pulsed Output) may be used to trigger a relay to drive the solenoid if required.

This is the output used to trigger the solenoid(s) when the stage is active.

While fuel solenoids typically draw less current than nitrous solenoids, some can still draw up to 5A. See the datasheet or Quick Start Guide for your ECU to determine which output type is required for your solenoids' current draw.