Knock Retard On Throttle Close

[swingtan]

Hi all,

I've been logging for a while now and have noticed on a number of occasions I get an amount of KR once the throttle has closed. Can anyone explain why this occurs?

At first I thought it might have been the spark ramping in too fast, causing knock, but it's normally still falling when the KR occurs.

Here's a a segment of a log file showing the KR as the throttle is closed.

Thanks in advance,

Simon