Holley sniper pwm. I have the primary fuel pump wire sent to a relay to control on/off for primary voltage to the pump. All modern electronic fuel-injection systems require clean, consistent power to operate properly. P/N 558-400 This harness connects to the 8 pin Metripak Input/Output connector, located in most Holley EFI main harnesses (Terminator harness have a 3 pin I/O connector). com These pumps are not benefitted by PWM speed control. The first method utilizes a PID controller to a target boost pressure (closed loop control) and the second method allows you to dictate explicitly the solenoid duty cycle (open loop control). May 14, 2024 · Holley just made it easier to wire your car and set it up for a modern EFI system. This includes most 2007+ GM engines and most 2005+ Ford engines. Nov 16, 2020 · An EFI system is a collection of several simple sensors that perform very important functions. Sep 3, 2020 · Unfortunately, the Sniper does not have the required pwm - output as an option. It uses the Terminator X ECU, which does have the PWM- output available.