Ruud

I was at my dealer last week and told him about the ECU reset procedure and what it could do for your car. He believed that resetting the ECU in combination with running your car on SUL could increase the turbo pressure but he had his doubts about how long the new setting will last. According to him the settings won't last long, because the ECU 're-learns' the setting that were programmed into the EPROM.
So, my question is: do you have to repeat the reset after some period of time (or after a number of miles), even if you use SUL all the time?