Ok guys. Basically my Z wouldn't break 1,200rpm in neutral until it came up to full temp. My original post [ http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=1097372&forum=technical&dtSearch=3 ] I ran the codes as suggested by aliaZ and surprise, surprise. Code 13. Replaced the coolant temp sending unit and all is well. Even though the car would run seemingly without trouble after reaching temp, it is now more responsive.