Nighthawk

[Tev62]

The airbox is a resonant chamber and is designed to "pulse". The disturbed effect mentioned by GoldOxide is a reflection of a poor design affecting that natural pulse. This is the very reason why most snorkel deletes or pod filter for airbox replacements fail to produce the results a rider expected. It is also why this stuff is a complete waste of money. There is no end of suckers buying the airbox inlet replacement plate for Royal Enfield 650's, it does absolutely nothing but they will all tell you it works by "freeing up" the airflow, hilarious. You have to fully appreciate what you are doing in this circumstance, I believe PowerDubs has a good handle on this .

I have posted a link to this before but for those that have not seen it it is a super article on resonant airbox design.

https://motorcycleinfo.calsci.com/Airboxes.html