On ecp website they have a type approved and non type approved cat. The latter is about £20 cheaper...anyone any experience with one of these as need one to mot. Cheers
my k11,s have all passed with just the 1st cat fitted mate, other options are, decat or coilpack middle pipe (or else gut yours, but they tend to sound tinny then tho)
Type approved ones are 'required' for cars after a certain year (2001?), whether there is any difference I don't know - you might just be paying for the approval.