If you plug the two connections, you said it will affect the idle, If I do that will something else go wrong eventually?
Here's a link:
http://us.lexusownersclub.com/forums/index...36&hl=air+valve
You can just plug the two connections leading out - this would affect you steering @ idle though.
The valve is letting PS fluid pass up and into your valves........this is why your getting the puffs of smoke......