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Title: Reset Long term knock control adaptation Post by: M.Mischler on October 16, 2023, 07:30:47 AM During tuning I want to check if my ignition angles in KFZW and KFZW2 fit or if the system has to retard the ignition angle based on knock.
If I have understood the infos on https://s4wiki.com/wiki/Timing correctly, there is a short term retard, a long term retard and a "medium term retard" for the knock control, just as there is an STFT and LTFT for the fuel. I guess that these correction values are stored in RAM. To check if my values in KFZW and KFZW2 fit, I would like to reset long term retard and medium term retard, before I do a full throttle run. Is there a way to reset them? Maybe the same as resetting the LTFT by clear DTCs to reset the values to zero? Title: Re: Reset Long term knock control adaptation Post by: nyet on October 16, 2023, 11:00:12 AM During tuning I want to check if my ignition angles in KFZW and KFZW2 fit or if the system has to retard the ignition angle based on knock. If I have understood the infos on https://s4wiki.com/wiki/Timing correctly, there is a short term retard, a long term retard and a "medium term retard" for the knock control, just as there is an STFT and LTFT for the fuel. I guess that these correction values are stored in RAM. To check if my values in KFZW and KFZW2 fit, I would like to reset long term retard and medium term retard, before I do a full throttle run. Is there a way to reset them? Maybe the same as resetting the LTFT by clear DTCs to reset the values to zero? Yes, clearing DTCs will reset the trims. Title: Re: Reset Long term knock control adaptation Post by: M.Mischler on October 16, 2023, 04:42:46 PM Yes, clearing DTCs will reset the trims. Nice to know, thank you nyet. |