Knock sensor 1992 240 gl

[BoxesAndSquares99]

I have a 92 240 gl that keeps tripping the 1-4-3 knock sensor code. I replaced it with 2 different knock sensors and it still does it. But it only does it when I rev at 3k guaranteed. Otherwise my car is literally slower than a lawnmower. I've replaced so many parts I have no clue where to look anymore I can't find this issue to save my life. I just want my power back. My system literally has no other codes