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Tip for retro turbo people with slow rev down

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Just a tip for people who have the problem with the engine slow to drop rev's
its similar to having a air leak in the system, but normally happens to turbo cars that have long vacuum hoses going to the turbo gauge .

Fit a item called a turbo vacuum restrictor that's used for turbo gauge flutter but fit it half way in the vacuum hose between gauge and placement of vacuum point.

After fitting it should rev down super fast giving a nice crisp throttle response .