So I bought an 1997 Acura Integra, with an LS/Vtec and a turbo kit on it, i realized afterwards that the map sensor wasn’t plugged in, and i upgraded to a 4 bar because i planned on getting it tuned. Now, I went to plug it in but the connector for the Map sensor is nowhere to be seen. I ordered the pigtail for my map sensor on ebay and my question is, how would i go about to install the connector. Like do it install it somewhere into the harness or straight to the ecu?

 

The MAP sensor wires should come out of the engine wiring harness a few inches below the TPS plug. If the MAP sensor plug is chopped off, you will find the original wires there. It is possible that the previous owner used a GM 3-BAR MAP sensor and it would NOT be mounted in the original MAP sensor location on the top of the throttle body... likely close on the firewall with a vacuum line connected between it and the intake manifold plenum. If you didn't have some type of MAP sensor connected, the car would barely idle and usually run really rough.