since i dont need emmisions i can take charcol canister off. one line goes to intake , but where does the other line go to...the one that goes into firewall?
Unless components are damaged and one does not wish to replace them, there is no real reason to delete it. One can but I would not.
The vapors are purged into the intake when conditions allow, which is only beneficial. Plus one does not have to smell fuel vapor, which often happens when a direct vent is run.