when the ap is showing fine knock learn but no feedback knock does that mean its unlearning that knock?
At a very high level, Subaru has three different forms of knock control:when the ap is showing fine knock learn but no feedback knock does that mean its unlearning that knock?
it sounds like a high pitched ping right? totally different than an engine normally sounds? all ive ever heard my car do is groan when under load but never any pings. is it difficult to hear or is it pretty loud?well were on knock control , what frequency are u guys zeroing in on in ej25 ? I can easy hear knock low when under 2k but never heard it up high. Mine's set on 10.9kHz , think oem is just over 11kHz. Last data grab i registered 0.72db only driving medium conditions at 2400rpm, and i doubt it knocked and didnt count it. I have not fine tuned it yet as im not going over 13psi till i know i got it set right. So keen to push some timing/boost but not till i learn this knock system 1st.
And the long term trim on mine basically takes a little one day then puts it back the next. elite 2500. Same as the deflection in the cam belt from one side to the other. little one day then put it back the next. Think I need to let the LTT go for a week and see what happens. Reckon it will be balanced out again.