totta crolla wrote:I guess if l blocked a few ports l could do away with all of the standard cold
start/idle gubbins too?
Exactly. The valve is capable of passing all the air the the engine needs for starting and
idling. There is no need for any other idle air source... electrical load, A/C load,
starting, stall saver etc. These functions should be controlled by tables and settings in
your programmable aftermarket ECU.
The primary function is water temp vs % open to raise the idle when cold and taper it
down as the engine comes up to operating temperature. Secondary table settings add a
few % opening to take care of A/C load and electrical load. I used a factory 20V IACV for
my individual throttle body setup and it worked fine once the correction tables were
calibrated correctly. Just check that your ECU has the tables and a spare PWM output
with a suitable power rating (pulls 12V to ground).
Cheers... jondee86