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Why have one ?
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5,676 Posts
Discussion Starter · #1 ·
Getting to know your TiAL BOV

your not metering air thru a MAF so you can run it closed if you like at idle . You just need a spring that is rated just above your vacuum . I would choose to run it closed that way you dont have UNFILTERED air going into engine .

Engine Vacuum Reading | Use Spring
-22 and -23 in/Hg | -12 Psi (-24 in/Hg )
-18 and -21 in/Hg | -11 Psi (-22 in/Hg )
-14 and -17 in/Hg | -9 Psi (-18 in/Hg )
-10 and -13 in/Hg | -7 Psi (-14 in/Hg )
 
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