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It goes before the throttle plate on the boost side of the turbo. Then you adjust it and a vacuum hose does go to the vacuum TREE. Its used to bleed off boost during closed throttle and to keep the turbo from excessive back preasure biild up. It works very good and should always be usd on a turbo car. Peace Tom
It goes before the throttle plate on the boost side of the turbo. Then you adjust it and a vacuum hose does go to the vacuum TREE. Its used to bleed off boost during closed throttle and to keep the turbo from excessive back preasure biild up. It works very good and should always be usd on a turbo car. Peace Tom