Wow, I'm very delighted to have your reply. I have read a lot of threads about this and seen your posts a lot.
I think you had a post where you had a screenshot of the Nistune maps on idle adjustments and I vaguely remember seeing the maximum adjustment that the ECU can make to try to achieve the target idle is perhaps +/- 3? Didn't know they can pull or add that much delta. Also, is it possible to reset this learned advance/retard?
My iacv screw (black plastic) is worn and adjustments are very difficult so to use that to set to 650 RPM is not very easy. As well, as mentioned, with the TPS off max retard I can get is 20 deg which will pull the RPMs up given the same amount of air.
Workshop manual says put to iac/aac adjust. mode in Consult. What does that actually do? Put iac valve to base duty?
I have just ordered a consult cable and will read the ECU's timing and try to adjust CAS to the same. If it is not possible then I guess it's jumped a tooth and belt/pulley work time to align the cams to crank?
Thanks in advance.