Strange Sensor Not Connected!

[Fanta pants...]

Hey everyone, I bought a r32 gtr a few weeks ago. After sorting out the afm problem, I am still having issues with boost, when I was fiddling around today I found a sensor on the fire wall near the brake booster (not the sensor for the internal boost gauge) another one next to that with a larger vacume line.. I traced the vacum line and wiring into the car. The wiring ends at the passanger floor with nothing connected and the vacume line stops in the drivers side kick panel with a bolt stuck in it!! The part number on the sensor is 949940-6270, which comes up as a map sensor.. Which concerns me as this sounds like something that should be connected and a vacume line should be connected..

Can any one shed any light?

Thanks..

[DVS JEZ]

May have been for a boost gauge or ecu

[Fanta pants...]

Hmmm.. But the vacum line is connected to the sensor.. So, one end to the sensor and the other with a bolt in the end..

[R31Nismoid]

Could've been running a HKS VPC or similar perhaps.

Either way it's had something there before, that's not removed - likely ECU related.