I'm still considering my options for bringing fresh air into my 4. I know many guys are using NACA ducts on the sides of the cowl and routing the air up to the panel. I've also been told that NACA ducts on the side skirts don't really work so well, but I'm wondering if those little Vetterman vents on the side skirts might do a better job. Opinions/experience??
Steve Zicree
RV4 Wiring and 100 other details
Steve Zicree
RV4 Wiring and 100 other details