Well got a good feel for the info I needed as a result of the fine article on www.c5forum.com. Here it is. I was expecting a lean condition due to GMAF, but found a rich condition instead. If you notice I am a bit fat on the juice but bunch fat NA. Help me with the timing I am not sure how to interpret that.
NA RUNS (averages): all w/ KR = 0
1: O2B1S1/S2 @ WOT = .913 (timing=26.0)
LTFT B1/B2 (cells 1-19) = -6.42 (timing=29.7)
2: O2B1S1/S2 @ WOT = .947 (timing=26.2)
LTFT B1/B2 (cells 1-19) = -5.13 (timing=29.6)

NOS RUN (averages): KR = 0

1: O2B1S1/S2 @ WOT = .910 (timing=25.1)
LTFT B1/B2 (cells 1-19)= -3.68 (timing=31.3)

Thanks in advance for any suggestions with the MAFT. I am thinking try the base @ -5% and leave the WOT alone.
Randy Hughes
PS I know the sig is long but included to help with suggestions.

 

Add KR to your WOT monitoring. If you're not picking up any, I'd try and run a little leaner.

The maft works great for nitrous runs. I keep my O2 around .87 (when I get get away with no KR) on NA runs and then turn it a notch rich when I get on it with the juice.

Mark

 

Your Ltrims are small negative values, thats exactly what you want. Stay at 0 (no change) for the base setting on the MAFT.

WOT NA: I would recommend setting 8% lean on the MAFT. Then go out and get some more ATAP data. NA I think that best power at WOT is acheived at about 870 to 880mV on the O2 sensors. You should get the car on a chassis dyno with on air/fuel ratio meter.

WOT N2O: Maybe 2% or 4% lean on the MAFT. It is probably a good idea to run a little richer with nitrous, maybe around 890 to 900mV.

Ultimately, you want to run as lean as possible with no KR.