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 ?
I think you should hold off on tuning it for a while, in case something is wrong. That seems like too much variance between the banks.
I would look for exhaust leaks.
I will have to do a smoke test for the exhaust because I can't hear any leak .
I checked all the flange on the intake pipe , seems all good . I did the same test when it was out of factory .
Not to be a smartass but doesn't the Ecoboost only have 1 bank???
No worry , we are not here to be dumbass
There is 2 upstream wideband and 2 in the converter .
Not Mustang EB, F150 EB. That was my first thought too.Originally Posted by yonson
Maybe I misunderstood the post. Are you under warranty? Have you put a tune in it?
Yes still warranty , did nt install a tune , don t want to tune around a problem .
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