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Do you or the dyno guy happen to have any of the quickest opening power valves handy? The 9.5 or 10.5 PVs are not something that a lot of guys have laying around. But I have found that when I get the cruise clean (mid to upper 14s usually), the engine needs the PVCR flow quicker to prevent a stumble as the throttle is lightly or slowly opened more.

Enjoy!

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Agree about the pv and now the hot ticket is the 4-hole hi-flow pv`s.............On that I cruise on level ground at a steady state and select a pv 1-2"`s under the vaccum reading and that works well so far. A buddy of mine takes over new ownership of "The hot rod shop" here in town and wants me to be his #1 guy and we`re installing a chassis dyno and will become real familiar w/this stuff soon............