wwest, first you said,
"Doesn't matter, the engine/transaxle ECU will still erase, FORGET, anything unique it "learned" about "your" driving style just as soon as you switch off the ignition. Otherwise the next driver (your better half..??) might get VERY PO'ed."
Then you said,
"On the other if by "start up" you mean after each engine ignition sequence then no, it doesn't relearn the transmission "shifts", parametric control of transaxle shifting. But it probably does learn something about your driving style that affects the way the transmisison is shifted.
I perfectly understand when you reset the ECU it clears everything it might have "learned". I perfectly understand the MAF is constantly sampling air temperature to adjust air/fuel ratios.
But...
If it forgets the transmission shifts after you power it off and it does'nt relearn the shifts after a restart then ummm what does it do at all??? See where I lost ya?? :)