nmcam

hi guys
i've just got my first impreza turbo & spent the wkend blasting around the b-roads of perthshire. it is an amazing machine! ok, ok, i just didn't know...it is incredible what you get for your money with a impreza turbo!
the only slight concern i have is about the brakes. is it worth getting an upgarde to brembos or the like? does it affacet the abs?
also, being more antisocial, are scanners worth the money? do they really work? what is the best one to buy if they are worth getting? (not that i want to break the law, but you know how easy it is to go quite fast...)
any thoughts much appreciated
cheers
nmcam