I bought myself a moondust silver mk5 rs2000 today and drove it home 178miles with no problems at all it needs sorting in a couple of areas (body wise) but nothing too major

i`ll sort pics out tomorrow but there are a couple of thing i want to know.

temp gauge doesnt work, what could it be ect???
gearknow is some shit thing that dont fit,where can i get a proper fitting one???
as far as power goes whats best to get more??? it has a k&n filter and a ss exhaust already.........