Mike G.

I have a 3W48B2 rear induction engine in my PW. I cut out the firewall for the carb to fit. It still has all of the openings in the extension that holds the firewall. Do I need to add a tube to bring air into the carb or can it draw enough air from the surrounding air coming through the cowl and fuse? I think I have read about installing a 1" Diameter tube to the outside of the cowl but I'm thinking that that was for when the carburetor was completely enclosed.

I'd appreciate your thoughts.

Thanks,

Andy