Im looking for a nice performance ECU for my 2000 focus zts, if you have any websites where some are please post them

Welcome to FF and this is also in the wrong place. I know its confusing at first but this is for the electric focus comming soon. there are ECU and electrical forums lower down the page

To the question: it would be much easier to reflashh your ECU with a flasher like diablo or xcal3. contact Tom from focus-power (1turbofocus) or other people who do tuning and they will hook you up