went to autozone to see about a map sensor. i need one w/o vacuum line i switch over to mass air, could i just cap it off i know the 90 and 93 dont have the vacuum line auto zone said there all the same the all have the vacuum port.
I did the convertion not to long ago. They say there is a difference with the two sensors, But they do look same, and both have the vacuum ports. When you purchase a 89-93 map sensor it will include a little rubber grommet to prevent a vacum line going on. When I did the switch over I went ahead and bought the new sensor it cost about 40$.
With the car running I simply switched between the old to the new sensor I could tell a difference in the idle qaulity. It seemed to idle better with the calibrated sensor.