injector help!!! video attached!

[93s13wa]

240sx injector problem help - YouTubeengine:

ka24de
year:1993-s13 HB


okay so i have been having this shuttering issue at 1/2-3/4 throttle

I recently found out the PO removed my egr valve? near the external coil and my coil is just sitting there limp not connected ...im not too worried about that because i just realized a bigger problem!!!

I just installed my walbro 255... improved the shutter or maybe i thought it did..

just replaced the gas filter... improved but still shitty bogging down and helped my idle...

so i decided to pop the hood and i started playing with plugs and connectors

so i unpaged the first fuel injector front to back (me on the intake side)

and it bogged and almost stalled ...good injector..

now the second...still boggs down

now the 3rd...DOES NOTHING I EVEN REV IT ?!?!?!?!

What does this mean