my hpi Jan 13, 2008 14:54:15 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by trini4life on Jan 13, 2008 14:54:15 GMT -5 i purchased a hpi rs4 3 evo + at nyc hobbies , and for some reason the engine has to rev to high in order for the wheels to spin