From the instructions:
Can anyone elaborate on this for me? What exactly are you supposed to do to the breather tube? Thanks.
If you notice a putting sound coming from your intake it is caused by the check valve in the PCV port on the rear of the valve cover. This check valve is sealed at rest and when pressure builds up behind it the valve will open creating a putt sound. This is not harmful and if found to be an annoyance the check valve can be removed from the rear port.
Can anyone elaborate on this for me? What exactly are you supposed to do to the breather tube? Thanks.