OK to all those who are much more educated than I. I have a 5.3 Silverado with custom turbo and camshaft. The base tune has been written but I am trying to get the idle in the ball park before commensing any real tuning. With a commanded idle of 680ish it will pull timing badly negative and idle roughly 200 rpm lower than target. This also tries to spool the turbo at idle which is kinda funny. I have tried all the normal things I have done with cammed C7s and no matter what I change,both up or down, it does NOT make a difference at all. I have tried the torque reserves,driver demand in idle area,external limit and spark everywhere. I raised the spark and lowered the spark but it only increases or decreases the TM spark. I raised the minumum spark at one time but it makes the idle very eratic. The file and log are attached. Any insight would be appreciated.