17-10-2012, 04:16 PM
just been out and looked at my spare one and its basically a valve to block off the vacuum hose to the charcoal canister. I know only some have them though for some reason!
Team Eaton
1999 China Blue 306 GTi6 - Eaton Supercharged - 214.5bhp 181lbft
1999 China Blue 306 GTi6 - Eaton Supercharged - 214.5bhp 181lbft