When I blip the throttle at idle, it tries to die but it doesn't. The idle drops to around 500 rpms for a few seconds then comes back to idle which I set at 850 rpms. It only does it in park. Any ideas? Should I up the idle rpms a little? Right now I have it set to 850 rpms in gear and park. I have a 228 cam, LS6 intake and ported 243 heads. What table should I adjust to fix this and which was should I go with it? I was thinking the throttle cracker table would solve this. Here is a snapshot of mine. Take in mind that a professional tuner had adjusted the table because it would pull even when I let off the throttle in gear, like the cruise control was on.