Discrete shift torque mode
I've really been trying to understand why you would want to use Discrete Shift Torque Mode for shift pressures. In my tune, there is an enable table, Low-Mid and Mid-High threshold tables and finally Low, Mid and High tables.
My understanding is that when enabled, the computer will use "preset" values for the shift torque instead of the actual shift torque in order to determine the correct shift pressure to use.
I'm unclear about a few things:
1. Why would not want to use the actual shift torque to determine the correct pressure to use in the first place? I know the help file mentions that it makes it easier for the transmission to "learn" the correct pressures, but what good is learning the pressure if it's not for the correct shift torque anyway?
2. The shift torque threshold tables that detemine if the Low, Mid or High tables should be used for the pressure don't seem to make much sense. For example, for my 2->3 shift, anything under 22 ft. lbs of actual shift torque would use 37 as the pressure lookup, between 22 and 155 ft. lbs, it would use 203 for the pressure lookup and anything over 155 ft. lbs would use 369 for the pressure lookup. So if I had 37 ft. lbs of acutal shift torque, the computer would actuall use 203 ft. lbs for the lookup!! That makes absolutely no sense to me.
What am I missing here? Think I would be better off disabling discrete shift torque and just letting the computer use the actual shift torque values instead? Just not quite sure I understand the benefit of discrete shift torque.
I would just try it, but I need to get my car inspected on Monday and don't want to reset the emissions readiness test status right now (can take days to reset).
Thank you!