Hey guys,
Ok, so I finally figured I would post on here to see if you guys have some ideas about this. The vehicle is a 2005 Cadillac CTS-v LS6 6 speed with factory DBW throttle body. I recently performed a heads and cam on the car, and am just tuning it now. I would say everything with the tune has been great except one part. When you are driving at lets say 2200rpm, and then you push in the clutch to let the car go to idle as you approach a stop sign, the rpms will go down until it pretty much dies. The only reason it doesn't die is because I have implemented stall saver until I get this figured out. I have attached my current tune and a log of the car on what it is doing. You can see in the logs where it will go down to about 350 rpm and then stall saver spikes up the rpms. I am keeping my foot off the peddle during these times as to show what the car is actually doing. I am pretty much out of ideas on this thing. I tried messing with rolling idle a little, but not too much, and also I tried to increase the integral and proprtional LOW values by quite a bit, as I figured it was being able to correct and ramp in tps fast enough before it dies. But these have basically done nothing as well. Anyone have any ideas? Thanks in advance.
starting again.hpt
Dying after push in clutch.hpl
EDIT: cam is a 227/235, 110+3, and heads are TFS as cast 220s.