Where to wire pcv valve after engine upgrade? Jul 27, 2020 1:47:21 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by p0lar604 on Jul 27, 2020 1:47:21 GMT -5 i swapped a 2010 motor into my 2004 ruckus. where do i wire the pcv valve to? I still have the 2004 ecm installed.