I have a 2019 Charger with a 6.4 that has a Whipple 3.0, Kooks long tubes, and a BBK 100mm Hellcat throttle body.
The car runs great, except when its in park or neutral the idle will hunt up and down from around 800 to 1000 rpm. Its not a surge where it gets out of control and dies, but more if a smooth oscillation. When you put it in gear, it settles into its idle nicely.
I have adjusting the throttle body airflow tables up and down quite a bit, and nothing seems to affect it. If you look at the log, the throttle position voltage doesn't change. I'm thinking maybe its something in the spark tables, but I haven't come across anything.
Anyone have any thoughts?
whipplecharger_huntingidle.hpl