I been having problems with this p0106 map sensor circuit range performance problem... Any one ever had this code. it comes on and off. Car is tuned and running a 3 bar map sensor. Sometimes the car runs great and other times this code comes up. At wot car cuts off at 5500 rpm. feels like blowing spark. Any ideas? thanks

 

It is the map low and high thresh hold table. I was getting it when we first added turbo and increased the high by 10-15% until code did not reappear. Once I found roughly where that was I added 5%. I think I lowered the low table maybe 10% overall but not sure if it was needed.