On mine there is no vac line to it. Seems that that a true MAP sensor would be somehow routed into the intake by way of a vacuum. See if there's another sensor with a vacuum hose near the throttle body.
Edit: Got curious so I just looked it up on my copy of Vadis. It is on a triangular shaped mount low (in front of the throttle body if you're standing in front of the car). That would make sense: MAP= Manifold Absolute Pressure. In the parts catalogue section, I see no hose connected to it.
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1998 S70 T5 Emarald Green Metallic (125K), 2004 V70 2.5T Ruby Red (45K), Previous Owner of Black '94 850 Turbo Wagon (Sold at 140K and miss her). My cars have been running so well lately they've got me worried.
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