My goal is to tune my KA for longevity. I don’t race my KA just practice with it, (race 206 Masters/Legends). So as far as I can tell my Lambda value should be near .90 and the beginning of a straight and 1.00 at the end of a straight. No idea about AFR but plan to record both values. Next weekend I hope to record some data at LOK if we can practice Sunday. Depending on how many show for KA on Sat I may just run that class. I would also eventually like to try it on the 206. The KA has a Mychron6 and my 206 has a 5s. The Lamda unit is the LCU1s open cnfgd. for mychron. My question: Is .90 to 1.00 in Lambda value correct for the KA and what values am I looking for on the 206.
I’m not too experienced, but for longevity I’d try to keep revs and temperature down. As you only practice, I would not worry too much about actual lambda values but run it so it doesn’t smoke and provides you with the fun you want 
I’ve played with the idea of getting a lambda sensor but the cost and complexity doesn’t really justify it IMO