I had assumed that coding out was just another method, yet from what you're saying it appears that by coding the car will never run stratified which makes me think what is the point of coding! Specially after what Will said when i asked the question
"Mapping out the Nox is essentially the same result as noxem both are fooling the car in to thinking the box sensor is either giving good data (noxem)or the data doesn't matter (mapped out). Same result two different ways of achieving it."