(11-04-2017 )Rawze Wrote:  I have seen trucks with incorrect altitude or ambient temp readings make lower than normal boost or power too, never throw a code.

(11-04-2017 )Rawze Wrote:  Also, you did not mention how low the boost is and/or how +when it got that way.

(11-04-2017 )Mr Hagg Wrote:  Axe does your friend ever come through GA. or will the truck make it? There are many reasons why you have low boost. Would love to take a look at it to see what it may be. ANd how long ago was it done. May things have changed over the past few years. and like mention before could be egr tube leaking if it was dont along time ago. Or as Rawze mention may be in some sort of silent derate...Just the other day we have a truck that the wiring got on the exhaust pipe after the guy had a clutch put in and who ever did it left the wires loose and it burnt into the 5 volt wire and caused it to through a few odd codes..

(11-05-2017 )axe Wrote:  It will not boost at all. few pounds, says guage wont hardly move. I'm on my way home and try and see whats going on. Hes covered all the stuff besides somrthing electronic. EGR crossover tube not leaking. This guy has the worst luck, its always something weird. Changes his turbo, we have changed a couple, and now cant go to work, LOL poor Jim. Thanks for all the suggestions and help.