Hi all.
I am trying to sort out an issue I am having with my 4L60E.
As the title mentions I have the shifter set on 1st and do a power run (drag run) but the car will automatically shift to 2nd at 3900rpm (44km/h) which is way too early!
Ideally I would like the car to hold first until approx. 6000rpm.
Any ideas where I should be looking in the tune to adjust the shift point for first gear hold?
I have attached my tune for you to look at. I have also attached a screen shot of when it all happened. Could it possibly be that I had not achieved WOT? I had 63.9% throttle but I would assume the car would hold 1st if first is selected.
Thanks in advance.
Mark