Good hear you got DA working.
Just about any any ADX will work fine. You may want to find one that has as many things defined as you can. The ADX we have on this site are usually some of the most defined you will find. In TP RT V5 you can create your own dashes to display what you want how you want.
Don't rely on the O2 to tune, use the data from it yes, but don't rely on it. Also realize that using a NBO2 is more of a switch than a sensor. The transition from high voltage (near 1 volt) to low voltage (near 0 volts) is a very steep transition that happens around stoich, and has very flat response on either side. This is why a WBO2 is usually suggested, because it can display actual AFR, not just an approximation.
You need to see, feel and hear what is going on. If the engine is surging, figure out why. Too lean? Too much timing? Just trying to load the engine below the cam operating RPM? Is the engine blowing black smoke? Too rich. Does the engine feel lazy lazy? Too lean? Too little timing? Too much timing? Too rich? Do your eyes water when your sitting in traffic, or near the tail pipes? Pull some fuel. Does it smell rich?.... etc.
Use common sense, if something doesn't feel right, figure out what it is that's making it not right. There's no one solution for any condition, sometimes you need to experiment with different things and sometimes you need to make drastic changes to isolate the cause, and then fine tune that condition. Don't be afraid to start over or go back to a better running tune if you feel you're heading in the wrong direction.
Most of all, give the engine what it wants.
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