pretty sure hes talking about a knocking sound and not a False Knock retard reading but true story engine vibrations will give ya some false KR
also on the whistling noise. using a piece of kleenex and going around headers you should be able to see a leak via motion in the paper
if its not coming from there going around your vac lines with some starting fluid (cold Engine) and listening for a kick in the idle will help ya find vac leaks another good tip is if the car idles rough or your LTFTs are stuck at 16.4 you got a vac leak