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NPP Exhaust Issue
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04-04-2013, 04:50 PM
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DuskSS
Bayou City Muscle Cars
Drives: 2013 2SS Dusk Edition
Join Date: Jan 2013
Location: Houston Texas
Posts: 1,443
at idle/startup and below 2k it is open.
at 3k or higher it is also open.
so only if you hold the rpms in that middle range will it be closed
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2013 2SS Dusk Edition
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