There is a bolt that has known to come loose in the intake, you can see it with the filter removed, is there a hole with no bolt?
Maybe that was it. My guess was a stuffed up blow-off valve install, I like your idea though. I guess no warranty as the bike has a tune/pipes/filter, installed when purchase new. Sus though, I may still contact Kawasaki Aust to ask. I'm told a new blower is $5500 and I guess many hours of mucking around to install.
1. Does the H2 have any type of oil injectors?
2. What are the four injectors above the intakes in the Plenum chamber? I know its an odd question, they looked to have oil in them!
I only put 4 litres of oil in the bike with a filter change, the oil drain hose still has oil in it after 500km or so. It looks a lot, however I've checked it about five times, and the 4 litres of oil is still visible at the bottom section of the oil level window.
3. I washed the bike an error code 69 came up, I guess its water on, or in something. I will do this odd 3 phase idle/ride reset thing.
4. Any recommendations for the suspension basic setup for a 100kg normal riding? That is turns in or out. 2021 H2, H2.