This is my friends 99 z28 6 speed car, he has PRC 2.5 heads and a Lunati cam around 228/234 duration (he thinks) the car is really rich at idle, and has a surging/bucking around 1400-1800 rpm. Could someone look at the logs and tune to get me in the right direction? Thanks in advance.kevin j 99 bucking.hptkevin bucking 103.hpl