This is interesting. See on this engine where there is a connection to the intake plenum and then runs down to the fuel rail? EDIT: Visual misinterpretation on that, it does not run down to the fuel rail.
This spot is capped off and the venturi tube uses that spot as a mounting point. Where it goes from there would be the brake booster?
I'm not sure if this is a Boxster engine either as my air compressor is way more to the right. That last bolt on the intake plenum was not fun to get to. Lots of stuff in the way, not a clear shot like this picture shows.
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