Narrowband/mv tuning

[Deeker1]

Narrowband tuning

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Thanks alot guys, this helps. If I understand correctly, by using the chart to convert mv to afr during closed loop the vehicle can be tuned. I know that the ecu goes into open loop at wot but if s reading directly off of the O2 sensor say on the driver's side bank, couldn't the same mv conversion be used at wot sense I am reading my O2 sensor directly?
My G8 uses a resonator/muffler as it's cross-over exhaust circuit for lack of a better term/explanation. Would it be betremove this and install a true x-pipe with the wideband O2 sensor in the center thereby picking up a mix of both banks or is the drivers bank just the better way to go sincseems that you say it seems to run leaner.
Sorry for the long questions but sure do appreciate the help!

[Roger Ramjet]

A wide band O2 sensor will be more responsive and more accurate installed BEFORE the cats.