Can anyone help shed some light on a CEL my one car is now poping?
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
Where to start? Bad sensor or Map. The car is pretty highly modded.
Ideas what to start replacing to make it go away?
Thank you.

the code says it's the sensor, but it's good to check it out first. it's easy to get to cuz it's right on top of the throttle body, just check what each wire going into it has with a DMM. one should be ground, one 5V, the other should vary when the engine is running and should be constant with the engine off. by the way, the MAP is the sensor, it functions as a Barometric sensor and MAP sensor cuz it's the same thing at initial start up.

I know, i should have typed Sensor/MAP, not 'or'.
Anyway, i ruled out the map last night. I should have started where the problem began. The utec was not wired properly. i have two wired going into the yellow wired map sensor in the ecu harness. One for stock map(yellow wire that we cut-was not pluged in!) and i believe the other for either gm map or the greedy EB. Anyway, once i got both plugged in she idles and runs fine. I dont know why the installer didnt plug both in thou. Could have did some damage driving home, but luckinly i think the gm map/utec was taking over anywhere other than idle.
Thanks for the HELP!