De - cat help??!!

[paul6]

hi guys after a decat for my 51 reg 172, but don't know which one i need?? 1 or 2 lambda sensors?? any help would be great, thanks, paul

 

[Batman]

just have a look if you see a lambda on the cat you have 2 if you dont you have 1

 

[edde]

You have two sensors.

Then aain you don't connect the second sensor anyway.