Sorry, Yes I have a complete Barra Turbo motor in my EL, still fabricating exhaust and frount etc but am already thinking about the ECU problem I may come across. I have not dealt with many standard ECU's due to using only aftermarkets at work. But I beleive Loop mode is where the ECU detects a problem and does not let the motor rev past a certain point or running all together. Since I am using the standard EL ignition barrel and instrument cluster etc, im not sure if the standard BA ECU will run without all of the other BA electricals. Is what I am talking about not Loop Mode but something else, just so we understand each other.