+1 what Simon said, he knows E38/VVE
I would use LTFT's since they are in effect numerically filtered STFT's (even if that means turning on CL/LTFT).
+1 what Simon said, he knows E38/VVE
I would use LTFT's since they are in effect numerically filtered STFT's (even if that means turning on CL/LTFT).
Some more help on the VVE.
If you are making small to moderate changes to only one to three cells in a zone, you will find that the generation of the coefficients and VVE will pretty well revert the cells back to pre-change values. This is because the zone is seen as a whole to the coefficient generation and all cells influence the final shape of the zone. To get the values where you want, you need to over correct the cells you want to change and then blend into the cells around those ones. You also must remember to set up the zones so that common driving conditions fall as close to the centre of a zone as possible. For example, idle, cruise, acceleration and WOT should be areas that fall in the centre of zones ( as far as possible ).
Taking this into consideration, if you are trying to change cells at the edge of a cell, you need to blend into any neighboring zones as those will also affect the values of the cells you are trying to change.
If in doubt, over correct and blend....
Simon.