jkhulon73 wrote on 12/31/69 at 16:00:06:I had inquired about a cone filter at a local shop and the guy behind the counter just about had a stroke and told me it would never work with the stock carb and the bike would never run right if I put one on. Was he full of it? I have zero experience when it comes to these carbs with a slider in it. In addition to being a bit of a perfectionist, I also enjoy a clean, minimalist approach- and the box just doesn't seem like it would allow for good air flow.
The guy is a dipstick. There are lots of people running all kinds of filters on all kinds of carbs, and most combinations can be tuned to work together; with varying degrees of success, but all of them "work." There are always people around who think you have to keep everything the way it was originally engineered, or you're screwing it up. While that sometimes happens at the hands of someone with no experience, and no input from experienced mechanics, it is seldom the case when well advised. And there are plenty of people right here with the experience and advice to keep from getting in over your head.
Since you say you prefer a "minimalist approach" a cone filter may be the way you want to go. As for an air box not flowing good or being restrictive... that just depends on how well engineered they are. Some air box restriction might even give a bit of torque advantage, but an open flowing design like a cone, is probably always going to provide the greatest horsepower in the long run.