Best Idle Air Control Valve (IAC) for M400

[mr2andy]

Hello,
I would like to know which 4 wires IAC valve will work the best with Motec M400.

Cheers
Andy

[OmarK]

Hi there,

Can you provide more details about your particular application and the engine you are using?

Regards,

[mr2andy]

Omar,
I went out and bought a haltech branded IAC and IAC housing. I believe the IAC is actually a 4 wires not sure if it's a bypolar or unipolar IAC. I believe it's a GM/DElco style IAC.

Will be installing the M400 on a 3SGTE MR2 with custom instake manifold.

[RossB]

If it is a 4 wire valve it sounds like it is a stepper motor, this is not the best thing to use, I would use a PWM controlled valve. A 2 wire one from a Ford would work ok, much better than stepper motor idle control.

[mr2andy]

Thanks for the reply Ross.. Can you elaborate a little more on this?

I haven't drop in the idle air control motor cause I'm thinking maybe I can get by without using one.

Can you tell me more about the 2 wire PMW IAC please?

Cheers