Quote Originally Posted by matt5112 View Post
First question is it misfiring?

If no, then is the belt slipping?

If no, Is the BBV actuator closing during WOT?

Figure that stuff out first.

And the solenoid can fail separately from the actuator.
No misfiring. I'm thinking the belt is slipping because of the boost levels going up and down like a roller coaster throughout the each run. Not sure about the BBV. how can I tell if its closing?