still having boosting dramas with me ba. Its still does not boost all the time is seems to happen more when vehicle is has been driven around for a while. for example come out of a roundabout in second, boosts fine change into 3rd and 4th and its very flat and no boost right through the rev range. Have checked all hoses replced clamps replaced acuator cleaned boost solenoid vehicle is stock (no tunes etc) and ideas would good cheers

plugs ,coils ,fuel filter ,would be the next things to check

pull the covers off the exhuast and make sure all bolts are tight against the head

my guess is that your wastegate flap in the turbine housing is sticking open.

Im having the same issues only it's not boosting at all now and might once a week, I will be looking alot futher into when I get a chance to look at it. I will let you know how I go at a later date.

not sure ETM that it's a flapper problem because my actuator is moving the flap as it should from the outside of the exhaust housing.

Edited September 24, 200818 yr by MYWPN

Well I finely got around to fixing the boost trouble. I found the throttle body was causing all my troubles and it's all up and go now. the boost was overcoming the motor on the butterfly only opening the throttle a little. the vehicle would not boost most times but if you tried feathering the throttle you could get it to boost sometimes