Originally Posted by
ScarabEpic22
No, this should have NOTHING to do with trans pressures, IIRC I reset the line pressures back to stock in an attempt to track down the problem and if I touched those tables it still messed up the shift. What is happening is when the values of those 3 tables are altered and you go WOT in 1st gear, if short-shifts at 4000rpms (at 30mph for the customers 3.73 gears). If you look at table D1216 "WOT 1->2 Shift, 4WD Mode" the stock value is 4000rpms, the exact same value that the shift is occurring at when these tables are modified. It is NOT in 4WD at all, there is a bug that occurs when these tables are altered causing the PCM to incorrectly use the WOT 4WD 1-2 shift table instead of the normal WOT 1-2 shift. The fix, simply do not alter the tables in that one OS, I have tested it on 4 or 5 other P10 OSs and only the latest 02 one is affected.