Hey guys, what about cold temperature!

I tested mine today for fun!!! (2.1L) (about 40F) and i have no reading?
450MV means nothing!!!

Another good question, i have the OS on the cat but my new U pipe (the one
between the cat and the Y connection) as a hole under for the OS??? (near
the cat )(i think it's for the 1.9L also)

For sure the original is stuck there and i was thinking of leaving the old
one there and adding the new one to the U pipe just for fun and also to
make some test. Yes the old one look like it's the original one. I banged
it, i did heated, put some loose nut and it's still stuck there, for
ever!!!(joke)

What are you're taught about using the U pipe hole?

Ben
http://www3.sympatico.ca/huotx/engine1.htm