Quote Originally Posted by Thorwon View Post
Dave this system runs two 02 sensors. But the manifold only has one bung in it. Do you think I can get away with hooking both inputs to one 02 sensor?
I just don't want to have to pull the exhaust manifold off again, it's a P I A.
Here's another video of it running.
I'm guessing, but I think two O2 sensors in a single exhaust is mostly OK. I'm thinking GM used Bank Assignments on V6 / V8 engines for Fuel Trims . . . for error codes Bank 1 / Bank 2 rich or lean. Theoretically (I think), both O2 sensors in a single exhaust would simultaneously trigger Bank 1 / Bank 2 rich or lean errors and simultaneously correct to the same rich / lean fuel trims?

What happens when one spark plug fails in the inline 6 with two O2 sensors in a single exhaust causing "All Banks" to run rich is anyone's guess how the engine will perform or cause potential engine damage? What happens when one O2 sensor fails with two O2 sensors in a single exhaust is anybody's guess what "All Banks" will do for engine performance or potential engine damage?

dave w