Closed feedback is turned off for tuning. There are no misses, nor a hint of a flat spot. . The gear is 2.73. And so far I have been keeping it in 4th. The 5th gear has not been called for yet. I have barely gotten it above 2K in 4th. I have just driven it around locally on country/suburban roads: lots of hills, and changing from uphill load, to downhill no load at all, and high vacuum readings (low KPA).
I have a wide band gauge in the dash, and a narrow band O2 sensor for the ECU. The two seem to agree with each other. The wide band gauge reads 16-17:1 when the narrow band is putting out .1 volt. Acording to Emsvitil this makes sense. The wide band gauge was sort of goofy for awhile, but it seems to have straightened itself out. I think it had gotten somewhat fouled by the extra rich mixture I was trying to run before I recalibrated the fuel map, and just driving it for awhile seems to have brought it back to life.
If it runs this well when I get the entire fuel map worked out, I don;t see any reason to put the closed loop back in action. When it is pulling, the mixture is at 14.8, and my goal is to get all of the naturally aspirated cells to produce an AF ratio of 14.8 under medium load.
I am told 12.5:1 is a good target for forced induction, and I will tackle that after the rest is dialed in.
I don;t know what the fuel economy is yet. I have yet to fill the tank and drive it any distance. I am still driving around on last year's cheap gas.
Any more thoughts on AF target ratios. This is absolutely the most fun I have ever had with this car, and it is way more fun to drive than my 360 4 speed Dart was. It is finally to where the drivability is better than the carbureted system was. It was a rough year, but worth the effort.
Sam