[mkiv] boost problem (update)

[Arif Khan]

After replacing the WG VSV, I wired up the actuators as outlined in the tech article on the mkiv site but unfortunately, there was no "ah ha" moment. Now, instead of building 7-8 psi, I'm getting a consistent 10 psi in 4th and 5th gear but no boost in 2 - 3 below 4k rpm.

Before doing the above I did confirm that there was pressure in the line before the check valve on the IACV actuator as well as the lower EBV actuator.

Furthermore, at the time I installed the replacement turbos I verified that all butterfly valve operations were smooth and unobstructed.

As of now, I still have to test the pressure tank circuit and the wastegate actuator on #2 turbo. There is also an actuator on #1 but I can't get to it without removing the air tube assembly.

Lance - 
While I was searching the mkiv archive I came across a set of posts by you in which your coils had gotten weak and presented symptoms that appeared to be boost related. Could this be a similar case?


Thanks,

Arif
sl300gullwing at gmail.com