performance chip???

[waynes world]

I am trying to sort the wiring and what i need to keep for the 2.9i cologne engine i have just fitted, when i noticed this which seemed out of place, i have been looking and all other ECU units dont have it, i have been told its a performance chip, can anyone give any more advice on it please,

should i keep it on? if i remove it what will it do to the running?













made out NOTEK on the sticker but google dont show anything