ran a compression test today, car rans great but is not running as fast as it should at the track and on the d.s front cyl and pass rear cyl were at 150lbs and the other 6 six cylinders were at 170, you can see my mods below and i have only had the car for 6 months, since it is a manual possible a couple bent pushrods?? ive never downshifted into too low of a gear with it, possibly the previous driver has i dont know..........