Ive been told its because the garage that fitted my turbo have t`d into the hose coming from the left hand size of the plenum,
(i think it goes to the blow off valve) and its supposed to go from the actuator, to the controller, then to a blocked up pipe down the back of the plenum?Is this true?
pic of engine with paint bits pointing out what i mean:
1
= where the boost controller is "T" pieced into.2
= where im supposed to attach the other end of the pipe from the boost controller.
http://img2.uploadimages.net/324416eh.JPG