Hi,i want replace the main catalytic converter,I think with a Knight Sport METALITcatalytic conv (I have a Knight sport Exhaust)
I know the o2 sensor in the precat,but the original main cat don't have some sensor?The METALIT KS cat I think has not any plug for sensor.
Can I install the new catalyst without any problems?
I have a S5 TII all parts stock.

Maxim

Edit:
I have understand now..the main cat have the split air pipe.
Anyone know if I can connect on the METALIT KS cat?

 

There is no O2 sensor in the main cat, just the air tube.

Just read the edit.

 

An aftermarket cat without a way to connect the split air pipe would require it to be welded on.