Thread: holley T-slot questions & others
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Old 06-20-2009, 02:07 PM
"QUICK-SILVER" "QUICK-SILVER" is offline
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Join Date: Feb 2008
Location: LaFayette Georgia
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What size/which 4150 are you running? And have you got power valve/valves matched to engine vacuum? Dual stage power valves can help a lot sometimes when you're having difficult or unusual tuning problems.

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