right i have a 2004 wrx and i need a replacement hose the one that connects to the top of the dump valve, its a thin hose not the big one that you block off when fitting a dump valve and also preferably what size is it as well

 

Sounds lke the thin vacuum hose you're talking about.

 

your right thats the one any ideas anyone where i can get one from

 

Just measure the thing and look on Ebay.
I bought some Goodyear hose for £3-£4 quid a Metre.