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This may be a dumb rookie question but i have some idea what a waste gate is/does but EXACTLY what is the function of it?
 

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not a dumb question at all duramax69 , all turbos have a “waste-gate” that is calibrated to “dump” the exhaust pressure that the turbine fan sees so that only a certain RPM can be obtained (turbos typically run at 150,000 rpm and more), this gate is usually controlled via a feedback hose from the compressor housing, limiting boost to a certain pressure.
 
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