running with just one good O2

what would be the result of disconnecting one of the O2's?

I'm pretty sure one of mine is good, it cycles faster than the other but doesn't matter which I disconnect, it still hesitates etc. Is that normal? just trying to determine if it may be something else.

 

Re: runnworse fuel econmy thats all i ran mine on 2 dead ones,

then 1 dead one, and now 2 live ones