Originally Posted by
sierrafery
on instrument mode you should get 1.3 bar at full load and 230kpa manifold pressure in fueling inputs, see the ambient pressure and how much it drops under full load cos faulty AAP sensor would limit the boost at 1 bar though you should get a fault code for that... make sure the wastegate rod is not stuck and the turbo hoses are not delaminated but as you still got EGR this can affect boost if it's clogged also the MAP sensor is presumably full of muck then it will read lower