Update:
Since temps have come up a bit, but now gone back down, the last 3 tanks since 1-18-17 have been 24 to 25 mpg. Wich is pretty normal. I think the low mpg was probably to do with the weather. Though i also noticed the mpgs drop very quickly above 70, 2 to 4 mpg hit between 70 and 75. Cam phasing must be doing something around 2100 rpm.
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