Log the pids
SAE.TP
GM.AFR
SAE.ECT
SAE.RPM
SAE.SPARKADV
SAE.IAT
SAE.MAP
GM.DYNCYLAIR_DMA
GM.IACDES
GM.IAC_TC_DMA
GM.IAC_TF_DMA
SAE.VSS
That is just going from my head so make sure there isnt too many channels being used. If you want you can PM me your email addy & I will send you my tune through to have a look at. I used to have similar issues to yours but now apart from the aircon, everything is fine.
Cheers Mick