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Many turbos come with an internal wastegate. For this, you do not need a wastegate. However, if your turbo does not have an internal, you will need to purchase a wastegate with a spring (psi) that is right for your specific application. You will also need a turbo manifold with a wastegate flange. Make sure the flange and port on the wastegate match those of the manifold, ie., 35mm, 38mm, 44mm, etc. The bottom flange with supplied gasket should be bolted to the manifold facing away from the engine to prevent venting directly on the engine. A dump tube is highly recommended for efficient/proper atmospheric venting. Then you need to run a pressure/vacuum line to either a vacuum block or the intake manifold or anywhere there is adequate vacuum on the 'clean' side of the engine. (Cold-side piping coming from [not going to] the intercooler if applicable).

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Q: How do you hook up a wastegate on a turbo system?
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