i have a turboxs dual stage boost controller and I have set low boost to 5psi and high boost to 9psi. The only problem is that on high boost it spikes to 9 and then drops fairly quickly to 6 higher in the rev range. Is there a factory boost control solenoid that I have to disconnect or is there something else wrong?
No factory boost control.
You may have forgotten to put the small restrictor that usually comes with boost contollers in the line from the compressor housing. Just check it all with the diagram they gave you. The controller may be in the wrong direction.