Basically you remove the throttle body, fuel rail, and anything else that is plugging into it, then unbolt it. You need to get a shop manual however, because there is a specific bolt pattern you need to use to avoid damage.
You have to remove the intake manifold to access the plugs in the back.
To remove the intake manifold on a 2001 Eclipse GT, start by disconnecting the negative battery terminal to prevent electrical shorts. Next, remove any components obstructing the manifold, such as the air intake duct, throttle body, and vacuum hoses. Then, unbolt the intake manifold from the engine, making sure to label or take note of where each bolt goes. Finally, gently lift the manifold off the engine, being cautious of any remaining gaskets or seals that may need replacement.
remove intake manifold.
Beautiful site here: http://home.pacbell.net/fong8/gstuff/tjc_plenum.htm
intake ports are differnt non-turbo only one vac port for the fuel reg.
on the intake manifold
on the intake manifold
There is 2 of them. and they are under the intake manifold. You will have to remove the intake manifold to get to them.
Remove the intake manifold retaining bolts from your 1993 Mercedes-Benz manifold. Remove the old manifold gasket. Clean the surface and put the new gasket on.
Remove the intake manifold, exhaust manifold, and then remove the head.
OBX
On top of the trans underneath the intake manifold.