Ernie - What air filters!
I have the strainers like most but those only keep out the big stuff. The other crap gets processed and is evident by the
oil condition which requires changes at around 500-1000 miles - it's when I change my
oil anyway. I only have about 150 miles so far on this entire build so I can't comment on long term affects but am smart enough to know what they could be. Some have seen as much as 100 hp loss just with the thin 1/8 foam insert so alot of weber engines are run relatively open. I hope this answers your question.