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[cts1950]

For what it is worth I have been thinking about my build and the initial results. I will post a dyno run that was done at 500 miles. I couldn't wait to see how things were going with the self tune. When I saw at the beginning of the run the AFR went extremely lean and settled down. I keyed in on the initial lean condition and missed the level it settled down to. I thought the lean condition could have been a exhaust leak so I put on v&h dresser duals headers. I now think that since I had only estimated 100 hp on the set up page that limited the fuel delivery to produce a max of 100 hp. This last week with over 1000 miles on the engine I have been testing some WOT runs and looking at the log files and realizing that at 100% throttle the lowest AFR was about 13.5:1 . I then tried to find how to get more fuel by increasing the pulse width and the only way I could do that was by raising the estimated HP that seems to do the trick. I now have it set at 145 and now the AFR will get to 12 - 12.5:1 on a WOT run. I have had to do a lot of tweaking to the advance curve now that the weather is getting hot mid to high 90s. This last weekend I took a 220 mile ride over a 5500 ft pass twice and still got 42+ mpg. I think I am just beginning to understand some of the power of this module. I appreciate all the info on this thread to help Twin Tech owners. They aren't perfect but what is. I wish I had the understanding that Curtis has with these units I hope to catch on to some more ways to improve the tuning process. I have the palm unit and cable now and can use it to monitor while riding. I am thinking of going to a hill that is several miles long at about a 6-8% grade and run repetitive runs up the hill at various throttle settings and map settings record the log files for each. I think it is the alpha -N files that ultimately need to be adjusted.