[Ed Wright]

Frank, when you play your log back, if you will pull up your fuel map, put it at the top, make it about half the screen size, then the log at the bottom, when you click the left arrow to scroll through it, there will be a "bubble" appear on the cell the ECU is looking at as you scroll through it. I don’t use load indexed speed density, that always goes to the top row, just like AlphaN. I mean regular speed density, Baro changes your manifold vacuum and MAP values. Load indexed will not. May as well use AlphaN as that, imho. On the dyno all you can do is tune for the weather that day. The Great Bend Kansas points race recently is the first time mine has used the 3rd row down in the map. Start out with 2% difference per row, dropping as you go down, in the top 3 or 4 rows of the fuel map for a starting place. Won't be all that far off. When you tune in different air, just tune the row at which it's looking. Your numbers will be bigger around the torque peak. That is normal. Leave the already tuned cells alone. Then log driving down the return road, with it warmed up. Shoot for about 14-1 to 14.5-1 there. Mine likes to leave in the mid-12s. Yours may be different. The return road tuning should also apply to AlphaN. That part can be done on a variable load dyno. A couple of feet of collector extension will make idle and low speed tuning accurate. Open collector will causes bogus lean numbers. Might look right, but hardly ever are.