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Tuning Air/Fuel Help 2009 Civic Si

Posted: Wed Mar 27, 2019 7:38 am
by Actionape
I've taken a stab at trying to tune my high/low fuel tables, as I noticed running the stock tuned basemap that I was running rich at WOT (around 10.5:1)
I've targeted 12.4, and adjusted for that. Is that correct or should I still tune for a little richer?

I haven't messed with cam angles or anything else as it's out of my depth.

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Thu Mar 28, 2019 8:08 pm
by Diogo Oliveira
You are using a hybrid calibration with AFM enabled, you need to tune the AFM sensor and not the WOT tables. Its a little bit more complicated to tune and takes more time, but it works just fine.

You could just mark the 'Use speed / density tables" under Calibration - Fuel and tune your engine using the MAP sensor only.

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Fri Mar 29, 2019 2:55 pm
by Actionape
Thanks for the heads up, i'll take a look at tuning the AFM sensor then.
If tuning using the MAP sensor to tune the A/F mix, don't you lose accuracy in the fuel gauge, oil service reminders etc?

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Fri Mar 29, 2019 3:25 pm
by EFICU
Actionape wrote:
Fri Mar 29, 2019 2:55 pm
Thanks for the heads up, i'll take a look at tuning the AFM sensor then.
If tuning using the MAP sensor to tune the A/F mix, don't you lose accuracy in the fuel gauge, oil service reminders etc?
I believe that was with the old "Race Files" from before. You shouldn't have those issues with a standard basemap from Hondata. Hopefully someone can chime in for sure.

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Fri Mar 29, 2019 4:16 pm
by Spunkster
As long s y ou don't use the old race calibrations you will not have any issues.

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Fri Mar 29, 2019 4:26 pm
by Actionape
Oh okay cool, I'm adjusting off the stock(Tuned) basemap. After enabling the MAP sensor, do I leave AFM enabled or disable it?

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Sun Mar 31, 2019 5:42 pm
by EFICU
Disable AFM, then you want to check the "map to determine wot" box under closed loop if you haven't already.

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Sun Mar 31, 2019 8:13 pm
by Actionape
Great, thank you for your help!

Re: Tuning Air/Fuel Help 2009 Civic Si

Posted: Mon Apr 01, 2019 2:53 pm
by EFICU
Actionape wrote:
Sun Mar 31, 2019 8:13 pm
Great, thank you for your help!
Sent you a PM about one of your datalogs.