On first start up of gsr turbo build, engine would rev up but fall off and then rev back up while trying to keep it alive by feathering the throttle. We let the car sit for about 10 min, it fired up and ran fine and reved up. After about 2 min of break in(2500rpm) car stuttered and now will run on idle but soon as throttle is applied engine will stall. The setup is obd1, gt35, 1000cc inj.,walbro 255, aeromotive fpr, skunk2 intake mani(with stock tb for now) and blaster2 coil. Idle fuel pressure is set at about 50psi. Thanks.