knock retard at begining of the drive.

[unixro]

I wonder if this is normal. I have 1,3 datalogs which shows a high retard and after this it stabilizes (this seems to be the first minutes of drive, probably until temperature is reached). I wonder if i need retard the ignition in those places or not.
P.S. I'm very new to this, and any help would be appreciated .
Also is there a way to retard the ignition only on some cylinder and not on all ?

It's almost the provided 93 fuelmap with normal throttle and full power in all drives mod. I had to retard a little the ignition in the first cell (-1 ) as i was getting knock retard at idle.

[Spunkster]

Have you done any modifications to the vehicle?

[unixro]

Nope it's complete stock . Eu 2019. running 100 ron . It seems it always does it when ECT it's between 50-70 degree celsius.
I've retarted it a little bit in some section and did another datalog on my way home.
The 100% fuel is when auto start/stop kicked in.

[Hondata]

Your #2 datalog from about is the best guide and it shows a small amount of retard on one cylinder under load. You don't need to retard the ignition - it is ok as it is.
The retard when first driving from cold is some oddity of the ECU. You could check by uploading the 'stock equivalent' calibration and see if it still does it. Note that if you use 'return to stock' the knock retard will datalog as zero so it cannot be used as a comparison.

[unixro]

I've put stock equivalent and only set E10 mod and seems to behave the same. I doubt the E10 mod has any influence . Knock retard after it's warm seem a little bit higher than the 93 map :D

[unixro]

I've put back the 93 modified map and did some pulls. Since the engine was already worm there isn't anything odd about the graph at least i think so. Please confirm, as i intend to leave this on. Or if there is anything abnormal on this last one. I assume the small knocks under acceleration are ok.

[unixro]

I wonder if there is any fuel compensation related to ECT since the behavior sure looks like it's ECT related. Then i wonder if my test with E10 mod on top of default calibration is correct or not. Our gas is rated as E10, can the extra fuel added by E10 mod cause this? I'm not sure if stock equivalent map should consider or not E10.

[unixro]

i’ve tested with only stock and the same so i guess i’ll ignore it and thats it, motor sound is the same before it starts and after so nothing to worry about i guess :)

[Spunkster]

Sometimes there is no problem, but because we did not previously see the actual data we are just made aware of how it actually works and there is no real problem.