Sounds like it is something that may do more harm than good. This type of mod is trying to mimick the cone filter used with fuel injected cars. Problem is that most bikes are designed with Ram Air, which would be ineffective if you punch a bunch of holes into the air box. Another issue is that the holes would be sucking in Hot air from the engine. You definetly want to be pulling in colder air as it is more dense than hot air.
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