Rb20 - Blocking The Idle Air Regulator?

[Kane_R32]

Hey guys has anyone tried and failed/successfully blocked off the idle air regulator?

This is the one down near the injectors under the throttle body..

My understanding is this helps bump the idle during warm up?

Would it be possible to bypass, and get the IACV to bump the revs pending on coolant temp feedback (aftermarket ecu)

[95_240]

If you are talking about the black fast idle air control, then yes I have deleted mine with no problems. I used a consult to hold my idle steady and just used the iacv valve to adjust the idle. I actually used an iacv off a nissan sentra. It is basically the same except it doesn't have the line running to the ficd that I deleted. It only has the line that runs back to your piping.

[Kane_R32]

Sweet, so how is your idle on cold start (until warm)?

[95_240]

I just realised you have an rb20 so the sentra iacv may not work as I have a rb25. As far as idle goes I adjusted it up to 800-900 and it idles just fine with that idle may do well at lower rpms but I had to set mine higher because I have fans that draw a large load. However, I haven't tested it at very cold temperatures because the climate I live in is always pretty warm.

[murph]

I have never ran onw on mine never had a problem. never had any trouble cold starting, may only be an issue if you live in the snow

[kitto]

Yes you can delete it, Just blank off all the piping.

Depends on what ECU you have as to whether it will let you do a table for PWM idle valve control vs coolant temperature i'm not sure. But i would think most ECU's will let you do this.

Say at 0 degrees C coolant temperature you would have a target idle of 1400RPM or there about and at 85-90 degrees C you would have a target idle of 700RPM or whatever you wanted.

I will be doing this exactly with my RB25. Idle target table vs coolant temperature. I'm using a Link.