my calibra turbo wont boost well please help i have no turbo smoke ive played with the actuator but still to no avail its 2wd but slow as pants probably about 160 to 170 bhp plz help before i have to go to rolling road£££££££££££££££
Simple stuff first.
Unhook the actuator and fasten the wastegate shut to see if it boosts well then but careful to overboost. If it boosts properly then you actuator is knacked or the pipes to the amal valve could be wrong.
If you can, measure the boost at the turbo and then at the inlet manifold. If it is massivly different (more than 1 or 2 psi) you have a boost leak somewhere.