Hello Brian. A few questions. Did you remove the rubber hose that is between the turbo outlet and the intake manifold inlet (large L shaped hose)? Very close to fuel cut off solenoid (on the rear) is the fuel quanity adjustment screw (looks like a stud with a screw driver slot in the end with a locking nut)........from the factory this adjustment screw had a safety wire through it to maintain the adjustment.........is this safety wire still intact???.............if there is a question about if the safety wire is intact, count the number of exposed threads of the fuel adjustment screw and report back.......


You may have more than one problem causing the run away...........

regards,
crossbones