The problem started before the MSD was installed, and the current motor. I just had a street ported motor put in, and the msd installed, but the probelm is still there. So the MSD should not be the issue. It did start however after the weber carb was put on, but I do not know why on the dyno it will go past 7000rpm, but not on track. Carb was new when installed, and jetting has been adjusted.