i get that but if your just creating a ecu with a map that wont account for boost with the posibility of cooking the motor if the o2 goes down?if i understand this correctly?then what is the difference between that and a piggyback system they are both doing the same thing they are just usin g different paths to get there but as an example a 03 ford ranger computer will learn on the fly it takes 20-25 miles for the ecu to set the parameters i consider that a standalone system it will learn through the entire rpm range.im not knocking it i just dont see why its better when from what i read it wont control under boost