https://ibb.co/YLLg0Hg <-- there's my bottle and location
https://ibb.co/sCks8Sw<-- Hose going to boost bottle on the intake plenum. That would actually be where one of the hoses would go for the SAI injection system. For me, on the left side of my bike - that's where the SAI was. The hose coming off pointing to the ground went in front around the engine to the intake plenum. Then, the rogue hose that went up under the seat - to nothing.
https://ibb.co/k2jzKBB <-- here's a shot of my crankcase vent hose filter. Filter replaced the hose going up under the seat to nothing.
https://ibb.co/brtx4L9 <-- That would be the port I was speaking of ON the air box, but already had that plug in it. And again, nothing was plugged into it lol..
https://ibb.co/pztz8nv <-- Crankcase hose to check-valve. Filter is just out of the way being blocked by the carb. I have a clear tube on the bottom of the check valve to see how much WOT I've been running - I mean, how much blow-by I've accumulated
Where the filter is attached was a hose; took that off because it was routed up under the seat - and to absolutely nothing.
Also, check your SAI hoses - one of my hoses, the INTAKE hose - was pinched completely blocking air going through it. After I found that little hiccup, I didn't have any running issues afterwards. With that hose being pinched, idk why, but wouldn't stay on for long. Looked up how 'optional' the SAI is so I removed it. MUCH better after taking that off.
https://ibb.co/fQ36QzT <-- Last but not least, there's where the exhaust port hose goes to the engine; where my block plate is now. Pushes crap dirt air back into the intake where my boost bottle hose is on the intake plenum. STUPID idea.. And yes, because of Cali (not hating) that's why they are there.. and catalytic converters..
I didn't have any hoses but the fuel line going to the carburetor itself, though - you got me on that hose going to somewhere on the carb next to the idle adjustment screw..