Ok, hv an electrical/timing issue. Car has MSD dist, digital 6al box. All ignition stuff has been replaced, dist is locked out, new coil, car will hold timing at 34 deg until around 4500 rpm timing starts going up, it will climb as high as 40 plus, more throttle the more it goes. This is a nitrous car. All wiring to dist, coil, box ect has been retraced twice, everything is right. ANY IDEAS OR SUGGESTIONS WLD BE GLADLY APPRECIATED!