it's your charcoal canister - it's basically removed on my nx when i put the VE in - no ill effects. I think it's supposed to keep fumes in the gas tank but dont see why you can't remove it, especially if your egr system is gone, since that is hooked up to the same vacuum gallery.
*edit* wait your title says front your description says right - which is it? one is the oil seperator on the front of the vc close to the rad, the other is the charcoal canister by your fuel filter. the former should NOT be removed, the ladder is what i wrote on above