[javadini]

i was going to swap the cat for a decat pipe but dont know what this pipe is attached to the car? and do we take it off the car or the the cat? or take it completely off?

please help,?

 

[javadini]

sorry pic is upside down

 

[mava_rules]

cat temp sensor, had mine disconected for a while (plug under passenger seat where the air vent is) and noticed no difference in the way the car ran.
just unscrews although mine was extremly hard to unscrew, had rusted well in.

 

[ru']

As above; it's the 'cat on fire' warning sensor. Ditch it