hey guys I have a 97 gtp an I just noticed yesterday that at idle an around 1500 to 2000 rpms at about 10 15% throttle just riding down the road from 45 to 60 mph my scan gauge is goin crazy it will shoot all the way up to 15.5* of kr even just sitting still idling an it don't matter if its been running long or just turned it on ive replace all the knock sensors thanking maybe one of them was bad but it never made any difference at all ive seen on some other forums that some 97 pcm do that is that true or do I need to be worried I run my scane gauge at all times for kr an it just started doing this