I have a 2006 Dodge Charger 5.7l that I have put a supercharger on. Running up to 7psi. One of the issues I am running into is that under load it will pull timing out. Sometimes almost to 0 BTC. It does not seem to be from the knock sensors. I have ran 105 octane fuel to make sure not running into detonation. The KR never shows more than 3 degrees. I can get rid of alot of it by reducing the Torque Management Spark Retard but then i get into uncontrolled idle and other ECT errors. I am wondering if anyone can tell me what Efficiency % is referring to in the Spark Retard chart. Also has anyone else ran into this problem with a suppercharger.