What is this hose for?

[SSICKLE1]

Hi All, I looked really hard but can't figure it out. This hose went into the top of the weber then ran back towards the brake booster then down the firewall behind what looks like a heart shield.

I'm attempting a sniper install.

 

[OSS]

Does it connect to the charcoal canister? If so, it’s a carburetor float bowl vent line. You wouldn’t need that with EFI

 

[SSICKLE1]

Does it connect to the charcoal canister? If so, it’s a carburetor float bowl vent line. You wouldn’t need that with EFI

I'll investigate further but I don't know where else it could be headed. Thanks.