Box In Front Passenger Side Of Engine Bay?

f8tlfiveo

My wife likes my spool and blow-off valve.
Aug 8, 2007
1,585
102
64
Lancaster, PA
what is the box called that is in the engine bay on the passenger side on the framerail. it has a vacuum line and runs a line to the fuel tank.it looks like its in that bad of shape that it probably doesn't work, is it necessary? i just pulled my motor out last night and plan to clean up my engine bay. so i am looking for things to get rid of that i do not need. there is no smog or egr i deactivated both of those in my tune and got rid of both of them. it is not a daily driver so i dont care about the egr saving me gas.
 
From what I can tell it is an emissions device that puts fuel vapors back into the engine.. Sorta like egr but for gas vapors instead of unburnt fuel. I found out it is called the charcoal canister.