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Old 02-01-2012, 06:41 PM   #6 (permalink)
t vago
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Only way to know for sure is to get a dyno chart of this engine's output, both with and without tuning valve engagement.

I did something like this when I retrofitted a tuning valve onto my intake manifold about 9 years ago:



The blue line was with the tuning valve in the open (off) position, and the red line was with the tuning valve in the shut (active) position.
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