My gut feeling is that it's got a solid tune based on a stone-stock 5.7L Hemi. Maybe it's rich enough to use headers and a good exhaust, I ASSume that the engineers that put that tune together could see that writing on the wall. Narrow-band O2 is primarily useful in emissions calibrations to keep the cats happy, and that happens at 14.7:1. Best power and best economy both occur elsewhere, so if the calibration is ON, it ought to be a great running engine. Most narrow-band O2 cars drop in to open loop at WOT, so it's the same type of system at that point.

Clair

BTW, Daty,
How's it looking for the Mini Nats? Time is slipping away over here, and the gap between what I've got to do and the time I've got to do it in keeps getting wider. I hope you're in better shape. Check out my high-dollar masking tape holder, as of about 4PM yesterday...