Track down a vacuum leak?

[Dave Rifkin]

Aside from the high idle what other symptoms would the lack of this metal gasket create?
My car has very little low end torque; at least it seems like that to me and it just doesn't have the balls that I'd expect from a L46 car.

Once I replace the gaskets with the correct ones; assuming the car has incorrect gasket set, what steps do I need to do? Do I simply adjust the idle speed and I'm good or is that being a bit too optimistic?

[njsteve]

Put the correct gaskets back, then adjust the idle speed, mixture and timing and enjoy the car.