Re: O2 numbers drop to zero on acceleration??
Sounds like you have a weak/failing fuel pump. Those are pretty strong indicators that you aren't getting enough fuel.
BTW, 800mv at idle is eye watering RICH. You want idle to be around 450-550 mv or else you'll be fouling plugs (and killing the catalytic converter if it still has one).
Monitor fuel pressure and see if it drops (my guess is it does) under acceleration.
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Ken Mosher
1987 GN original owner 650+ HP Black
2015 BMW 328xi XDrive wagon
2012 Volkswagen Tiguan (the Tig!) Night Blue Met (sold)
2006 Trailblazer SS Red Jewel Tint 395 HP AWD (sold)
2014 Silverado LTZ Crew 4WD
2012 Honda VFR 1200F Tahitian Blue (sold)
2015 BMW S1000R Racing Red
2013 Honda CBR500R Red (wife's bike)
2014 Triumph Bonneville T100
2003 Harley Davidson V Rod Anniversary Edition
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