7 th Gen Celica stock air box... What are the Three plugs for?
The vent hose at about 3:12 mark, A small filter could be put on that hose. It just draws in filtered air when the system purges the evap canister.
The blue plug and the black plug (center one in pic at 0:20) can be swapped (same shape). If they are it will cause start/ idle problems especially after filling with fuel. Happened to my GT-S
