What should I be seeing for turbo pressures?
97 Chev 1/2 ton crew cab longbox, 6.5 with a heavy camper in the box, {max load weight}.

At full throttle on a hill at 100KPH/60 MPH

cruising at 100KPH /60MPH

Acelerating from a stop normal driving to 60 MPH /100KPH ?

Thanks
Pete

 

5-7 lbs only.

 

Thanks . I am now in the right range. When I asked the pressures were all over the place, and usualy near zero. After checking vacuum and a lot of other things chasing the problem with poor performance and EGR / Fuel codes I ended up changing the EGR solenoid . After about 50 miles with codes still poping up it suddenly started to pull better, no mode black smoke issues etc. and good turbo readings . It seems like it needed a few EGR cycles to get back to normal.

 

Your welcome