At what psi does the little piston/spring open at, to bleed excess fuel pressure off? Is there any gain to be had by a higher psi opening pressure valve?
Since X number of case pressure pushes the timing piston to full advance, increasing case pressure would just render the dynamic timing advance useless right?
In theory, if one could allow farther travel of the timing piston, what else would need to be done to allow more timing sweep?
Also, what does the speed sensor that operates based on driveshaft speed do?