Can't speak on any technical aspects of simulated NB signals. I've read the arguments from guys saying it doesn't work/not recommended.
I've done it before, and compared tunes after the fact with a NB installed and the WB in a dedicated bung.
This was just the easiest method/solution on the car for me.
It isn't a track car, and just a stock engine with 140k on it, that I wanted to run better. Fuel isn't the same as when they were built/tune developed by GM.
It's pretty obvious with the WB installed that they're running on the lean side.
My initial data & calculations showed it was off by ~4% running the stock tune. With a little tuning it runs much better, and I'm happy with the results.
Might not be the "right" way, but it works for me.
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