By now, your new cammed truck should be idling pretty well (unless you have a cam like mine) so you can go into some of the finer points, one being the Idle Overspeed and Underspeed tables (HPT > Engine > Spark Control > Idle Adaptive Spark Control, Overspeed and Underspeed). (*Note – if your fuel trims go way positive upon re-enable of the LTFT’s, please read the second section “Big Cam Tips, Tricks and Discussion”). The PCM uses spark advance/retard and/or IAC/throttle blade movement to control idle. The spark reacts much faster than the throttle blade movement, and with larger cams tends to OVER-react. This tends to cause the idle to drop too low, or jump too high, which then causes the PCM to try to correct it back the other direction again using the Idle Overspeed and Underspeed spark correction tables. In your scan, look at the timing line in the chart view…does it bounce high and low or does it remain relatively stable (+/- 2*)? If it bounces around quite a bit, it may be a good idea to adjust these tables. Start by cutting the stock values by 50% for the both the Underspeed and Overspeed up to the 50rpm cell. Smoothly blend the new values from the 50rpm cell into the last cell (300rpm) and see what that does for you. It really helped my saw-toothed timing line and smoothed the roughness quite a bit, the stock tables are agressive.