I Have a 1996 Integra GSR and I keep getting a check engine light and the code is, P0108-Manifold Absolute Pressure/Barometric Pressure Circuit High Input. The car runs like crap when it throws the code but after it acts up for a while and after I rev tune it, it goes away for a while. I will reset the light and the car drives nice for a cuple of months but it keep comming back after a while and thats when it runs like crap. What is going on?

 

Most likely its a bad MAP sensor. Could be a wiring issue of some sort, but my first answer would be to replace the MAP sensor.

 

I replaced the MAP sensor and it fixed the problem.