I'll preface this by saying I have it hooked up on port B, and the tension screw backed all the way out like they suggest.

Now on to the meat: What would cause it to open, venting all the pressure in the intake tract, when the throttle is pressed halfway down and the turbo is boosting 15lbs? I had constant pressure on the pedal, was just cruising up to speed in 3rd, and out of no where it opened.