Finally got around to doing this, haven't had any motivation for MK9 as of late so yea I guess this could kinda be my sendoff from MK9 in a way as it may be my final MK video.
No real trick to it unless you are going for 3 F4's in a row (gotta do the first F4 from about max range so that the first F4 lands as late as possible)
All timing man (like Kabals dash infinite) best I can explain it is pressing F4 soon as the foot Johnny is doing the Axe Kick with hits the ground and yea it's around jump distance for the first F4 not max distance lol.