Hi, just joined the list. I'm working on building a VPC (speed density conversion) for a supra turbo using an HC12. I bought a 3-bar GM MAP (466) and a GM air temp sensor. Problem is I don't have any specs on them. Does anybody know how I can get the curves (or atleast a table) for the sensors? I spoke with several people at GM and they just go duhhhh... Thanks, Eric