Started last week, and have been searching and searching with no answers....The car at the moment won't Boost past 3 maybe 5 at times...I have no chip...

here are the codes as follows

p1114
p0140
p0237
p0106

I know and have read all the Cel codes, but can't figure out where to start other than the o2 sensor which I believe is the p0140...I feel as though 1 code is throwing all of the others and not sure where to start any ideas would be great

thanks