I was looking over the 3SGE Beams blacktop engine and transmission im going to be swapping into a Volvo 244 and i noticed a sensor looking part under under the intake. it has a hose running into it from the intake and then a hose running out the other side attached to nothing. i dont know what this is so i dont know where to hook up the other hose. I assume its some sort of intake pressure thing? any help would be greatly appreciated.