Did some logging of my stock tune on 98 (Shell), start of it is a 3rd into 4th gear run onto the freeway. Unless I'm looking at it wrong, this is showing the slight knock you talk about on stock tunes?
http://datazap.me/u/tech86/stock-tune-a01g-trimmed-log
http://datazap.me/u/tech86/stock-tune-a01g-full-log (same thing with more parameters)