First off who tunes your car?

but as said get your hose from roose motorsport (You sure you dont need a 76mm hose?) http://www.roosemotorsport.co.uk/images/hy7.jpg

But with an engine of that spec it sure would benefit from a new manifold

if i didnt run a genuine swedish id have got a new heart plenum myself


once yours is done you should see 580+hp imo