Post by
fiznat »
https://forums.nicoclub.com/fiznat-u1372.html
Tue Oct 18, 2005 8:47 am
Rick, I have a question about cold idle with that manifold, maybe you can answer. As I'm sure youre aware, the factory cold high-idle is achived through an enrichment based off of the coolant temp sensor, combined with the IACV opening to allow air into the manifold. I see there is no IACV on this manifold, so idle is obviously done by cracking the throttle plate a little bit. All fine, except during cold idle when your ECU is adding more fuel to account for the IACV air that is supposed to be there.
So what happens during cold idle? Does your engine just run like junk till it warms up, are there provisions for this, or am I missing something?