Quote Originally Posted by Stroked 388 View Post
Ya I don't know of a way other than what you read. If you have no motor noise like valve train lower end noise or resonating exhaust. It is possible for the knock sensor to be bad. Also there is a knock module in the ECM. As for your AFR being rich 14.7 should be the target value. But if it sences knock it can add fuel and remove timeing to try and fix it.
That depends on the fuel being used. If it is 10% ethanol stoichiometric is 14.1:1.