Hi everyone, I'm very much a newbie at tuning and have had someone working on my tune up until this point. I have a 2005 CTS-V that came with a LS6 but I've now put a 416ci LS3 into it. Other than being a bit lean in bank 2 at idle, the only issue I seem to have is that, when the AC is on and I'm out of the gas coming to a stop, the RPMs dip twice to like 300rpm and recover.
More details:
11.7:1 compression
245/250 114+2 cam
Mamo 235 heads
ported FAST 102
LS2 TB
stock LS6 MAF & MAP
Deka 60 lb injectors
return style fueling w/ a walboro 255 through FAST rails and an aeromotive FPR (connected to the intake)
TR6 plugs
I've gone through the forums and seen people suggest increasing AC Offset Max/InGear from 0.40 g/s to 3.40 g/s. That's the "_v1" HPT and HPL files I've attached - where I start w/ no AC drive up to a stop sign in the first few seconds and turn it on then drive more. No difference.
I've also seen people suggest modifying the AC Torque vs. AC Pressure settings. I left AC Offset Max/InGear at 3.40 g/s & set AC Torque vs. AC Pressure to x2 & no difference. That's the "_v2" HPT and HPL files I've attached - where I start w/ no AC drive up to a stop sign in the first few seconds and turn it on then drive more.
I've seen people suggest turning off all stall saver functions and suggest setting AC Torque Max Retard to all 0s... those didn't seem to help.
Can anyone give me an opinion on what's next? I think it may have to do with fine tuning of the spark but that's waaay beyond my level.
72416_1.hpl
72416_1.hpt
72416_2.hpl
72416_2.hpt