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Message: <blockquote data-quote="shlim8" data-source="post: 603357" data-attributes="member: 25063">It's about S$154.xx - it's S&72 each excl GST. Bought it from Eng Soon down at Serangoon Rd. (the workshop was going to order from local supplier at US$100+ each !!!).There is just one more set of DVs though... (they had 2 sets and I bought 1 set).Anyway, I would suggest that you buy the Turbosmart aftermarket valve as suggested by bro supergripen. It looks like a solid upgrade and can hold boost better, esp if you're going for JB4. At least it looks pretty solid. You can choose from a full recirculating (no psst noise) or vent out to the atmosphere version (psst noise).I would have gone for the Turbosmart recirculating version (no noise), if I wasn't in a rush to get my car up and running. Still keen to get it one day. The original looks very flimsy.</blockquote>