[ive had information from some guys at work that say they tried fitting dump valves but their cars didn't run properly after fitment but the fine people that have made posts on my post have told me why, because the valve has to be closed during idle hence i suppose you have to be able to adjust it somehow..
quote name=joshuajames' timestamp='1325697837' post='1435103]
Suggest you email via www.forgemotorsport,co.uk. They are incredibly helpful - may be able to supply direct. When you say adjustable, I know that Forge supply tuning kits that contain different rate springs and spacers...