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supercharger bypass valve question


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Hey everyone... I have installed the ATI procharger and my bypass valve has a bolt on the top I was unsure what it was for. It looks like the screw would prevent the bypass valve from opening completely when the valve open. Can anyone tell me for sure.

thanks....

PS we were mentioned in jan 2005 chevy high performance; page 29. "Go ziggy"!!

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That screw simple adjusts the butterfly valve inside and when it opens. Screwing it inward will make the butterfly open later and screwing it out will make it open sooner. I have mine screwee in a few whole turns to try and aleaviate any lost boost during shifts. ;)

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