How do you simply change an air injector Valve on a 1999 Prosche Boxster?

How do you simply change an air injector Valve on a 1999 Porsche Boxster? I can see it off the main hose of the air pump but its under the intake manifold, I don't see an easy way to change this valve execpt maybe remove the alternator.How do you simply change an air injector Valve on a 1999 Prosche Boxster?
There is no easy way.you got to take it off to get to it,you might have to remove the valve cover to.

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