Hey guy ,
I did a datalog to have an idea of what I can log to make a new custom tune . I found that LTFT Bank 1 was -2.5% which is normal , LTFT Bank 2 is -11.7% .
I regapped plug , to .030 , Reset all fuel trim , let it Idle 10 min and came back to 11.7% on bank 2 .
Engine have 1400mi on the clock . Called dealer , they told me engine run richer in the first couple of thousand miles for the break in period . Makes no sense since only one bank is off .
What do you all think ?