do the recirculation valves make any noise? - I like noise, it gets you noticed!
I don't think so the reason BOV's and Dump Valves are loud is purely down to excess air pressure not being used when the accelerator is lifted off and exited through the valve it's supposed to help with Spool up in the turbo
But then as I am not 100% sure I could be wrong, thats one of the good things about using this site, over time you'll learn loads and I for one will certainly be trying it out on my very own Scooby Classic Vrrmmm Vrrmmm
I just looked it up, it doesn't because it does increase the boost - which get's you noticed but not for long!
I can't find any for the early classics though - only for 97 onwards, ours is 96
posted some UK performance places in UK forum
if u need more help lemme know , since i'm here in US its kinds tough wondering who in UK to see , but I have modded enough of my own scoobies to get u n Oak1ey in right direction.