Some one please explain how a power valve works when under boost. I cant seem to find anyone that can really break it down for me. I have been wrenching for at least 30 years and have done just about every carburetor out there big and small down to the tiniest made. I have a very large assortment of holley PV ,S and jets. Power valves open at a specified inchs of vacumm, but what happens on a blow thru setup when boost is applied, will it cause a lean out condition?
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