The question is what kind of cat the Clubsport update has. My 2010 Plus4 Supersport had a 200-cell metal cat from the factory only and, what's more, it was much too small than to cope a 2 litres engine. It could never meet the emissions standard. My 4/4 from 2014 has a 300-cell metal cat for 2 litres engines from Brain, an HJS brand from Italy even if my engine only has 1.6 litres. It passes the TÜV for Euro 5.
