hi just bought a s2 escort turbo that needs a bit of work upon buying it i was told that it has a 195bhp chipped ecu how do i confirm this is it something to do with the 3 little shapes marked on one of the ecu's thanks

 

not to do with the symbols fella got to open it up to know for sure

 

ok which one do i need to open silver metal one or the plastic one and what should i look for inside thanks