Introducing the Outsider Garage Universal billet Idle Air control Valve. Designed around the common GM 4 pin stepper motor, this IACV is easy to source and setup. We've designed this with a 6mm mounting hole and added ORB inlet/outlet threads so you can choose to use a hose or AN fittings. Assemble your fittings the way you need with dual outlet options 90 degrees apart.
Why use a 4 pin Stepper vs the OE 2 pin?
- A 4-pin stepper idle air control (IAC) valve has more precise control over air flow compared to a 2-pin stepper IAC valve, as the additional pins allow for finer motor control with more "steps" per rotation, enabling smaller adjustments to the air intake, while a 2-pin stepper typically offers only basic open/closed positions for the valve.
- 4-pin stepper IAC valves are often found in modern vehicles that need precise idle speed control, while 2-pin stepper IAC valves might be used in older vehicles where less precise control is needed.
- As you upgrade your RB further from stock, you may require more control and greater range in your IACV in order to maintain proper idle. Tired OEM units will normally fall short of maintaining idle in heavily modified engines.
NOTE: An aftermarket ECU that supports a 4 pin stepper is required to use this IACV - will not work with OEM ECU.
Fitment:
- Universal
What's included:
- Billet IACV Housing
- GM Stepper Motor
- Plug & Pins
- 2x -8AN fittings
- 1x Plug
- Mounting bolt