I have a 90 mustang and it has been lopiing when i turn it on in the morning. it levels out after a while . I recently had some work done and my partner in mech. noticed there was no vacum line connected to my MAP/BAP sensor . I cant figure out where it goes to, if any where. Can you tell me where? and is the sensor a MAP or BAP?

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1990 Ford mustang 302/5.0