I was not interested in this thread because I thought you meant bicycle parts. There are so many guys pedaling around that when I read bike I am instantly afraid of getting into shape just by looking at people exercising.
That clean air into the exhaust might help burn unburned fuel. Not sure on this but raw fuel in the air is bad and catalytic converters need fresh air to work ... but I'm not at all up on what today's bikes do. You need to edit your thread title to say Motor Cycle. The poor bicycle enthusiasts are going to hate you for this.