i bought a da integra with an obd0 pr3 ecu. it is the b16a and for some reason the vtec will not crack. i bipassed the ecu and ran a 12 volt wire to the vtec cylinoid and when i touch the wires the vtec works fine. the problem i am having is tat about every 4 blocks the car will shut off when i put it in first gear to take off from the stop sign. it is not throwing any code though??