Without having a good look at it, my best guess is its a EGR port. (Exhaust Gas Recirculation). Some exhaust gas goes through a metal pipe, controled by a big diaphram, then back in the intake manifold. The exhaust gas is used as a inert gas, which lowers combustion temperature which reduces a cirtain toxic gas in the exhaust.
Sun, 29 August 2004 12:26
