Just to throw a kink in the works. I have the Gen 3, Headers, HFC and exhaust & under pulley. Had CEL come on went to Dealer, it was reset and set to "learn" mode. Came on again and went off on it's own. Came on third time. Each time was at a different low temperature. Went to tuner guy. A hose on Gen 3 was a little loose. Replaced clamp. Engined checked by tuner guy on his black box ( I have no clue what they are called, little mini PC plugged into OBD) Engine running fine, Not lean. However, I was told to wait 60 seconds before I take off from a cold start. I do and have had no issues since.
May be a bit difficult to test 12 degree weather in California. February here will test the below 12 degree running.
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