Are you 100% positive that BAMA turns of the rear O2 sensors on the race tunes?
The reason I ask is because I always order performance and race tunes from BAMA based on 91 and 93 octane gas. I have aftermarket headers with cats. And my various tunes(I usually just use the race tunes) would cause a CEL and I finally had to specifically request for them to turn off my rear O2 sensors for all my recent tunes.
I'd like to know this as well. From what I've read they do not turn off O2's in the rear unless you specify off-road mid pipe, which I have not.