With the popularity of these rising - (shit, they're everywhere again) I just wanted to note that Custom Bike March 1982 did a flow test on about 25 different air cleaners and this one was overall dead last with the worst performance. S&S Teardrop was the best. Highest flow was a velocity stack or no air cleaner at all. Hey, just stick a rag in it - or yer paintleg. Don't Let Your Harley Down?????