Sure . But AFC will only give you so much control . For example , I can close the AFC on my Serpent Mini 25 mm the 22 mm version has perfect AF imo , but the 25 mm is a diff story and my Limitless Plus nearly all the way down and it still be way too airy for my liking . Something about having a huge chamber like those two RTAs have that doesn ' t give you full control on how restricted the airflow is . I suspect but cannot confirm that the same is true for the OBS Engine , but perhaps someone that owns one can chime in and give some insight . I ' m not going to hate on dual coils , but I find that they ' re extra work with no real added benefits for my style of vaping . If you like dual coils though and someone can confirm that it will allow a fairly restricted lung hit , the Engine might be the one for you . The OBS Engine Mini is coming out soon . I might take a serious look at that just to see how it performs . Anyway , I hope you find what you ' re looking for .