Honda Civic 1.5T Air Fuel Ratio Settings

[eneskara]

Hello guys,
I have a little problem about Air Fuel Ratio (MAF Scale) settings. I have a kTuner v1.2 for my Civic. I am interested in about tuning and I usually try new tunes. I found optimum tune but I can't understand how to setting MAF Scale. I look datalog with kTuner application and .csv file. I know the MAF Scale uses Hz. I want to set the air fuel ratio to 11.3-11.4 for E5 fuel. When I look at the datalog, I see some spikes like 11.7-11.8 (WOT). When I first go WOT, it dips to 10.6 momentarily, then holds 11.3-11.4. How can I fix these dropes or spikes? Can anyone explain this?

Sponsored

 

[ModJPB]

I'm a beginner tuner, so someone with more knowledge please chime in.

I believe you need to adjust short term trim. Try to get as close as possible to 0%, anything 5% or greater is bad.

Isn't 11.8 still on the richer side, even at wot? 10.6 is very rich! Why you shooting so low? Worst case scenario, you are wasting gas and possible to burn out the catalytic over time.

 

[eneskara]

In Turkey we have a very bad quality fuel. Because of that the fuel can't cool pistons sufficiently (This is my idea.). So I usually put ethanol and my daily drive ethanol ratio is E5. I added the latest datalog below the post. So anyone knows the true turbo pressure, ignition and AFR values. Please inform.

Sponsored