Logging less items improves resution dramatically with Evoscan. I generally never log more than 5 items at once. Vista 64-bit is by far the worse OS for tuning software, especially since they Ll are 32-bit programs.
The XML files you 'see' and are editing aren't the ones that evoscan or ECUflash are referencing. If you go to the XML folder, on the top menu bar area there is a button labeled 'compatibility files'. Selecting that feature allows you to see the original files intended for windows XP instead of whatever ones you normally can see. It's beyond stupid. Get windows7 32-bit if you can.
Here is a link of the button you are looking for:
http://www.thetournamentdirector.net...ilesButton.png