Does anybody know what that little module on the passenger side firewall is? There is an electrical plug going into it and a vacuum hose port. My question is, the vac port looks like it's supposed to have a hose on it but it don't and it looks like it hasn't been on there for a while. Is this cool? if it needs a hose where the hell is it supposed to go. I remember seeing a chat on this before but never payed any attention to it. I think the module is the MAP sensor?????? Help?