jettin help please May 13, 2010 18:19:19 GMT Quote Select PostDeselect PostLink to PostBack to Top Post by vespa on May 13, 2010 18:19:19 GMT hi all ive a px 125 with mallosi 166 kit 24 mill carb casings ported to match 115 main jet do i need to up jet as i m going 2 fit a pm pipe or will the 115 jet be ok thanks,