Sorry...the PZEV is my car...a ZX3....my wife has a ZETEC ZX5....I think the problem may be the strut bar...the carbon fiber intake keeps hitting the strut bar, causing the piece to come loose and come off. H&N is working on a FIPK for the PZEV....they had my car for two weeks and have worked out the bugs for the manual...they have an automatic focus up the now and are dyno-ing it....the kit should be released in the next few weeks.