What oil are you running? The knock after warm up is from the oil heating up and becoming thinner. Try running a "thicker" oil and see I it helps with the knock.
Sent from my iPhone using Tapatalk
2006 Inferno SRT- Fully built
2014 Redline SRT- Bagged, GThaus, Kooks, ADV.1, etc
2015 Black Chally FatCat- pullied & bottle fed.
2013 550xi- intakes, tune, exhaust
1999 Viper- Stock 😉