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Accord 2021 2.0T tuning logic

Posted: Sat Sep 16, 2023 11:13 am
by CalibratEd
I am learning more and more about the 2018+ 2.0T platform and I have a few questions.

Knock logic:
What is the knock formula for this platform. I am trying to figure out how the ecu outputs the final ignition timing. I see the EGR ignition tables and knock ignition limit but i don't see a knock retard table. Does the knock control serve as a multiplying factor as it did in the 9th gen platform?

Fuel tuning:
I assume the MAF needs to be adjusted. In the 9th gen platform I am able to create an XY graph with the AFM.v and trims. There is not any data populated for the AFM.V. The Axis on this platform is AFM.Hz. When I create an XY graph for the the AFM.HZ and trims, no data is displayed.

-Ed

Re: Accord 2021 2.0T tuning logic

Posted: Mon Sep 18, 2023 3:04 pm
by Spunkster
Can you post a datalog you are looking at for the MAF adjustment?

Knock logic is like the 9th gen but more advanced. Knock control is multiplier for knock retard but there are multiple tables that are not exposed. It's pretty impossible to determine what the final ignition is going to be with these vehicles just based on table values. If you are trying to reduce knock, just tune the knock ign limit table so that knock control does not go up

Re: Accord 2021 2.0T tuning logic

Posted: Wed Sep 20, 2023 6:29 pm
by CalibratEd
Spunkster wrote: Mon Sep 18, 2023 3:04 pm Can you post a datalog you are looking at for the MAF adjustment?

Knock logic is like the 9th gen but more advanced. Knock control is multiplier for knock retard but there are multiple tables that are not exposed. It's pretty impossible to determine what the final ignition is going to be with these vehicles just based on table values. If you are trying to reduce knock, just tune the knock ign limit table so that knock control does not go up
Thanks for the reply. I have attached the calibration and datalogs.

-Ed

Re: Accord 2021 2.0T tuning logic

Posted: Thu Sep 21, 2023 4:50 pm
by Spunkster
Having our software engineer look at this.

Re: Accord 2021 2.0T tuning logic

Posted: Thu Sep 21, 2023 5:04 pm
by CalibratEd
Spunkster wrote: Thu Sep 21, 2023 4:50 pm Having our software engineer look at this.
Thank you.

-Ed

Re: Accord 2021 2.0T tuning logic

Posted: Mon Sep 25, 2023 1:52 pm
by Spunkster
In the sensor list change the AFM hz from a max of 1000 to a max of 10000

Re: Accord 2021 2.0T tuning logic

Posted: Mon Sep 25, 2023 6:20 pm
by CalibratEd
Spunkster wrote: Mon Sep 25, 2023 1:52 pm In the sensor list change the AFM hz from a max of 1000 to a max of 10000
That fixed my issues. Strangely enough my PC tower had the max at 10,000 while my laptop had the max at 1,000.

Thanks again.

- Ed