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ignition timing dip

Posted: Sat Jun 20, 2020 4:37 am
by pedja1
When accelerating (mostly in third gear at around 3k rpm) the car feels sluggish for about 0.5-1s, then it continues accelerating normally

I found in the log that in that moment two things happen, the ignition drops to 4-6 degrees, and a/f first leans out to around 15, then it goes to 12, after that it goes back to 'normal'.
I dont see any knocks and retard is 0

I read somewhere that TPS is the culprit, but to me it looks normal in this log?

I have attached part of the log and screenshot of the log

Edit: i forgot to mention that i have j37 Throttle Body, and this doesnt happen with OEM TB

Re: ignition timing dip

Posted: Sat Jun 20, 2020 3:24 pm
by EFICU
Can you post the calibration you're driving on?

Re: ignition timing dip

Posted: Sat Jun 20, 2020 6:35 pm
by pedja1
Here it is

Re: ignition timing dip

Posted: Fri Jul 03, 2020 3:19 am
by typer86
It seems to me the knock control will do fancy things.

Keep a try to set knock igntion limit "low" to 60 on all cam angles and set ignition IAT retard applied to ignition advance. Do also this for highcam...
Then tune your igntion profile until the knocks are zero if something will be tracked.

Hope it helps

Re: ignition timing dip

Posted: Sun Feb 07, 2021 3:34 am
by pedja1
@typer86

Sorry for the really late reply, I missed your post completely :D
I will try that, thanks for the advice

Re: ignition timing dip

Posted: Mon Feb 15, 2021 11:51 am
by pedja1
If anyone else has similar problem in the future, solution for me was to change "Ignition retard gear compensation" to -100% on all gears
Now the problem disappeared, and there aren't any side effects (so far)