Traxion already has one tore down. There are pics on another forum. They talk about the filter. Just as bad if not worse.
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I change my air filter in my car about every 50,000 miles. Do I need to do it any sooner on my bike, which operates in the same conditions? Unless there is some reason to tear into it, forget it.
Since most shops don't have a good selection of shims, I bet they'll say "the intakes never need adjusting, but they adjusted all the exhaust."