Hi folks I have 2003 Impreza and I've changed the up pipe for de cat version, but now the management light has come on, I'm assuming it's the sensor thinking the cat is at fault!
Any ideas how to turn light off? Or to bypass?

 

Remap !

That way it's safe gains

 

you can turn the code off in the map or you can stick a 2.2kohm resistor into the car harness for the EGT sensor that was removed with the uppipe cat.

 

Cheers