Attached is the table with proper xdf... At 19 F its -7 C. Your afr is commanding quite bit lower than stock either way. Interpolating the table, it is commanding 11.6 'ish afr and there are probably other modifiers lowering it more. If the map is fluctuating, it is adding AE along with the cranking fuel during the startup. My 355 is a $0D based tbi with a single plane intake and Howards 180245-10. Cold start is finicky but it just has to be warmed up for a couple minutes before it does ok. I added a MAT sensor and blended it with the CTS and it helps during cold weather.I also increased the idle rpm at colder temps. Setting the minimum throttle blade opening for less than 10 IAC counts on a fully warmed engine helps a lot also.
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