What's the front suspension and whose shocks are you using? I'm ASSuming a torque converter car and if so, then converter speed just a little too slow will screw with reaction times. Most guys don't have enough stall and all those little things will jack up RT issues. So can how much front end travel you have and how well the converter gets the car moving. One run it may get the engine in the power curve quicker and the shocks are happy and all that. The next run or a run even later the weather changes enough so that maybe the converter is just a bit too tight and now the engine struggles to get up on the curve and now the shocks are pissed off and it shows in RT and the driver is mentally beating his own *** after every run because he can't figure out how he became a **** driver over night...it all goes together.
Also, what is your IC, your stall speed, shift RPM and trap RPM?
