Bank 2, too lean

[sapote]

I have to disagree, near 10% less fuel can indeed cause a lean condition. Especially with a (canned?) tune, I suggest to contact your tuner (HTE), because with 8 and 9% LTFT .

Wait, so LTFT=0.91 in ECUworx means 9%? For me it's either 0.9% or 91%. How do you get 9%?

[S54B32]

1.00= means 100% fuel
0.90= means 90% fuel (or ~10% less fuel than table)
1.10= means 110% fuel (or ~10% more fuel than table)

so in easy speaking it means the ecu multiply the calculated fuel from table (and other factors) with this factor and then outputs this to the injectors pulsewidth.

[S54B32]

My ltfts typically sit near 8-10 on each bank, have for years, and I have never gotten any sort of lean code/warning. Interesting.

Unless you are 100% stock, you can’t compare this to another one.
And also depends how you drive/load rpm areas etc..
I assume you have a tune? When WOT is programmed very rich, this will not get you in trouble. But if you already have petty „lean“ WOT and you have very low LTFT, then chance is high your combustion temperatures are not that great and on track use or high speed runs you could make some damage..
If you have not a tune, I would check injectors/filter/pump.


Just my opinion: if someone has a tune and is not interested into fine tune the load load/cruising areas or fuel consumption and so on, I would at least recommend to turn off the fuel adaption or restrict it, that WOT is safe.