ok… i think the injector design is the main factor when atomizing the fuel… the layer of air over the abrased surface will cause the ‘air boundry’ that is talked about, but most sense would be to take a lowered grit sand paper perpendicular to the intakes airflow, so that you don’t get fuel drop ‘runners’ that allow the fuel to pool in the direction of the airflow, right?.. then again, a lot of that has to do with the method used when polishing and the direction it was polished, ect ect…
i have done no research in lsx heads… just asking questions