e.e.c. vs non e.e.c.

[20FSI]

hi all,

i was just on the supersprint website and was wondering what the difference was between the eec homologation rear exhaust and the non eec homologation rear exhaust.

is it simply a matter of res vs non res or a matter of legality.

explanations would be greatly appreciated since googling doesn't reveal much.

edit: whoops, heres the link:

http://www.supersprint.com/en/prod-2...280BA__08.aspx