I believe I posted this question incorrectly earlier...in response to an old post by mistake....just wanted to make sure you guys get this question. Can anyone confirm that the throttle suction valve, behind the glove compartment, related to the A/C system is unnecessary (overkill by Nissan according to the source) and that you can remove it, connect the lines together without it, and it will wok just fine. He said Nissan quit using them after the Z32 models on subsequent Z models.