Hi just fitted a decat down pipe to my96 wrx.Its got two take offs on it one on the neck and one further down towards the end and my cat pipe had a sensor on it which i cant remove. what is the sensor and wich take off would i need to put in it. thanks for any help in advance. pete

 

The top sensor is a lambda sensor and the bottom is a cat heat sensor. You don't need the heat sensor with a decat so just tie it up somewhere.

hth

 

you can unplug the sensor if you like it should make any diference iv done on mine, no light came on.

 

thanks for the advise its unplugged and tied up thanks again pete