How on earth do you tune with a wideband after the cat? I gotta know.
You just tune it like you would if the wideband was pre-cat. Is it REALLY that amazing that I have my truck tuned with the wideband post-cat? It works VERY well and I've never had a problem with my tune.
~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~