Just curious, I had picked up a spare Zenith Sromberg carb and manifold off eBay, and it came with one of these attached. Well, one of the latches on my stock setup never worked right, and it was a pain to pull the whole thing off to tune the carb, so I went against the federal clean air act and put the Longflo on. Makes an interesting hissing when I stomp on the gas, and seems to make a little more noise at high speed, but it seems okay. Would a K&N be any better? Just wondering how the foam element in the Longflo holds up compared to K&N's washable filters.