other than warmup is there really any reason to even need a means of controlling the IAC if you have a set volume of air getting to the engine? i know the stock ECU likes to fiddle with it a lot and run various diagnostics... but if you can get your idle rpm set appropriately with some sort of bleed valve (or keeping the throttle plate from closing copmetley like xtreme said) then it's just a matter of getting increased airflow for warmup, right? there's not really a need for actual IAC control persay, right?