It's not a standard exhaust its got 2 rear silencers instead of 1 big one. It's a race cat or sports cat standard cat is twice the size of that. If its 3inch it ,ought be a mongoose. Are the exhaust tips detachable?

The eml will be the race cat I guess, is the lambda plugged in? Also get some maf cleaner. These are fuckers for mafs like most new age maf cars lol.