Congrats! You should post this in the Mk3 section, not the engine performance section.
There are plenty of posts here about common issues with the Mk3 Focus, mostly relating to the DCT transmission and the MyFordTouch entertainment option.
Mk3 |╠╬╝|SGM|203a|Moonroof|17" Paint/Mach Whls|K&N 57S-4000 -snorkel|FFE RMM|Steeda STB, RSB|JBR bushings
Mk1|╠╬╝|Pitch Blk|Prem pkg|Moonroof|SVT Snorkel|SVT Susp|Steeda STS|Z-Eng RMM|Magnaflow exh