1993 Chevrolet 5.7 efi map sensor readings

Give us the code next time. See attached pics. But before you do that if your hose going to the map sensor is soft then replace it as this is a lot of the problems. Also check the tbi gasket for leaking causing a vacuum leak, use choke cleaner to srpay around it if the rpm change it's leaking. This could cause the same thing. Also make sure pcv hose is not soft either and egr isn't opening at idle.