Jeff Hill Profile Topics Started Replies Created Forum Replies CreatedAuthorPostsJeff HillJanuary 30, 2014 at 10:56 pm #45817Your friends are right–get a 5 hp unit. The one you’re looking at won’t cut it unless you have a super low cfm gun. That being said neither a 5 hp nor a 3.7 hp one will get you around the car without cycling.Settings AuthorPosts