Help identifying this can looking thing
 

Hey guys, I've just installed my turbo and new inlet pipe. I've plugged everything back in but I don't know what this cream-ish coloured can thing is.

[img]http://i.imgur.com/KL5eH0v.jpg[/img]

When the old inlet pipe was in there was a vac line that was connected to it but now the new one is in there's nothing for it there. I think my boost gauge is connected to this so I'm assuming it's just some vac regulator. I'd rather not guess so thought I'd ask. I've put a blanking plug on the nipple because it doesn't look like I can run a line anywhere anymore so is it good to leave it like that or is it best to remove it completely?

Its supose to go from fuel tank purge soliniod to your intake .. its for emmisions

[url]https://goo.gl/images/9uq5Mu[/url]

using the Perth-WRX mobile app