I finally got my truck tuned so there is no issue with the off idle to 2000 RPM drag (increased timing, increased fuel and airflow) so now on to an issue that was always present. When i give the truck quick throttle the RPM's drop down to 500 and up past desired and "hunt" for the correct idle. This also occurs when i come to a quick stop. After research I have found 1) adjust idle airflow under idle tab (I don't have this in newest HPT) 2) Throttle follower (thought it was just for hanging idle?) 3) Idle throttle Immed underspeed and immed overspeed (no clue on finding what these do) 4) VVE table decrease 400-1200 RPM 40-70 kPa by percentage (tried with no luck)... A lot of answers I've found are for gen 3 and older version of HPT. Any pointers for the direction I should try for adjusting parameters would be helpful. I will post a log this afternoon. 2012 2500HD 3/4 6.0L, TSP vvt1, JBA, flowmaster.