Hey yall,

When installin an A/F ratio gauge should i into the pre-cat or post-cat o2 sensor? Also, I have dual cats so would it matter if i did the left or right side?

 

Hey man, run pre-cat. Left or right side it doesn't matter. You can run both if you want. Hook up a dual position switch and run left and right. This way you can see variation and both will (should) give you an accurate reading. see-ya,
-Paul

 

I have heard that unless you are running a wideband O2, then you aren't really going to get an accurate A/F ratio reading. The factory O2's are only setup to read rich, stoic, or lean, from what I understand, please correct me if I am wrong.
By the way, how much do wideband O2's run? A few hundred right?