I know this is a stupid question but I'm tired of looking at how tacky my engine bay looks because I've used a milk bottle cap to block off the rerun hose. But now I figured out that there's actually a plug to do this (blanking plug) I'm just wondering what size do I need and has anyone used one before? Because the guy at auto one says that I should leave it how I got it because completely blocking up the hole will make it worse I don't know why?
http://item.mobileweb.ebay.com/viewitem?sbk=1&nav=SEARCH&itemId=300960998021
http://item.mobileweb.ebay.com/viewitem?sbk=1&nav=SEARCH&itemId=300960998021