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Looks like a temp sensor. Does/did the car have an after market ecu with an intake temp sensor?

it has stock ecu, with gtr mfd on it

Definitely IAT sensor

wow thanks!!, so intake air temp, hmm where should i hook this to?

i guess it goes to mfd straight away

Edited by enka

As Callan mentioned, the car probably had an aftermarket ECU which ran MAP instead of MAF. IAT is crucial when using MAP to regulate AFR's. It'll be fine to just dangle there or unplug and store the sensor somewhere just leaving the connector loose.

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