I just installed the AF-1 air Filter kit with PF-2 pre filter on my 2014 STS. I can not believe how much plastic it used in the original air system. What a nightmare to change an air filter. Double that to change the front plug. Thanks TJ for a great kit. BTW getting all that plastic out is a major PIA. Over 4 hrs to strip the unit and less than an hour to install the new parts. I love the sound it reminds me of my old car1941 Cadillac with the small air filter. If anyone wants any of the old air system parts they are available for the cost of shipping from Austin TX.
AllenR