**Hm , actualy i have also fitet some aftermarket cat but i dont know is it good , a actaly did dmged the cat after on a corner a litle bit but have fixed it . The new cat didnt also fix the code posibly becouse its not good mby . . . I have fited a spacer on the second sonda but mby cat still have a hole or mby there is a hole somewhere else . mby i should try completly remove to cat , see are there holes anywhere , check the wires .