I am sure that many of you have already upgraded your air filters but I just completed mine. I live in a dusty area and needed better air intake so I added a donaldson breather off a commercial zero turn mower. Really helped my performance and I am no longer going through air filters every 2 months. Pretty cheap and well worth it. Cost about $190 for the hoses, connections, breather assembly and 8 extra air filters I bought on e-bay. Pics are on my profile.
the donaldson assembly I used was G057516 which uses filter P831424. I think that assembly has been discontinued but the filters still cross at napa. The hose I used was cut to fit with poly fittings for irrigation pipe. Hope this helps....
