couple of questions,

i have a scorpian cat back system, im guessing its not a problem? it will just bolt straight onto the scopian part back?

and my car is bluefinned, is it correct procedue to install decat then reinstall bluefin?

do i need to reinstall cat for MOT?

also eml light? ive read they tend to come on? am i correct in thinking that as i have a bluefin it will sort itself out and light will go off (if it does coem on that is)

thanks luke