yeah the second lambda as far as im aware doesnt do much!!!!
I fitted dogmauls supersprint last night, and it comes with a threaded hole for the lambda to fit in (only for the first lambda)
I disconnected the second one (after the CAT) completely and jus cable tied the wire out of the way!!
I guess the second one is there to check emissions???? any ideas???
No engine light up on the dash
This means all you mk2 172 owners can now go and get mk1 decat pipes, come round my house, give me some £££ and ill wack those de-cats on the car for you!!!!!