OK another newbie question. Now that I have the trans shifting the way I want, I want it to hold 4th gear longer before downshifting, and go into 4th earlier to help on fuel economy. I already put values of 100% in the 4-3 throttle kickdown tables then took the Envoy for a drive and logged data. I confirmed it is shifting based on the part throttle upshift and downshift MPH tables.
I have already copied my Norm tables for 3-4 upshift and 4-3 downshift over to the cruise tables (I do not have tow/haul mode). Next I was going to shift all the cells down one so effectively downshifts would occur after 5-10% more TPS than stock, and upshift 5-10% TPS earlier. The question I have is can the 4-3 downshift table go below the 2-3 upshift table? Will this cause any issues?
Attached is a file showing the stock 2-3 and 3-4 upshift/downshift schedules along with the proposed 3-4 modified schedule.