[_JET_]

ok so i got a great deal on a K&N CAI and i dont have the instructions on how to hook it all up. I know how to hook up most of it like the MAF but there is a hole on the intake very close to where you clamp it into the throttle body. What is this hole for? and the guy mentioned that he had problems with whatever goes into this hole, he said someting melted and that its a common problem, did anyone else have this problem or did you just use the rubber gromet that was supplied? thanks guys