Problem cutting a light

[njk53]

Part of the reaction time equation is your vehicles rolling resistance (RR). The less (RR) the faster the car will move from a dead stop. Try increasing the rear tire pressures in 1 pound increments to see if that helps with your RT. If it does, keep increasing the tire pressure until the improvement stops or you get tire spin. Because of your consistancy with your reaction times in the .671 area, I don't think you have a converter issue either.

On another note what rear tire do you run? I am not familiar with P/S rules regarding tires. Your 60 foot time seem a bit slow. I run 1.60 60 foot times but our car weighs almost 4300 lbs with driver. My guess you are at around 3,500 lbs. You get this RT issue straightened out, you are going to have a killer vehicle/driver combo. Good Luck.