I'm not 100% on the 2001, but the 2003 that nipple connects to a Tee under the manifold one tube goes to the exhaust gas valve on the right bank the other end goes to the damper on the front crossover tube and a vacuum sensor on the left bank. There should be one tube with the nipple and three without.
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2003 Black 986. modified for Advanced level HPDE and open track days.
* 3.6L LN block, 06 heads, Carrillo H rods, IDP with 987 intake, Oil mods, LN IMS. * Spec II Clutch, 3.2L S Spec P-P FW. * D2 shocks, GT3 arms & and links, Spacers front and rear * Weight reduced, No carpet, AC deleted, Remote PS pump, PS pump deleted. Recaro Pole position seats, Brey crouse ext. 5 point harness, NHP sport exhaust
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