So, I have been told this is due to not having rear O2 sensors. Can this be tuned out (ish) by using Cold Warmup After Start initial adder and decay delays? I have been fighting this lean condition for a few years now, but spring, summer and fall get in my way. I also have been fighting a very lean (.2-.3 lambda) cold start condition. I think I have been working this latter out but was curious if the other can be tuned to not be an issue by using these tables too.