I just put a b18b1 in my EG about a month ago and I have have some problems with occasional ranging and hesitation. But now it has gotten horrible my car will die at idle and will hesitate unless I give it full throttle. If I try to keep a sustained speed it just breaks up until I floor it again. It is doing this all the time now. I have tried a few things so let me know if there is anything else I should check or re-check

Items replaced:
For the ignition;
cap, rotor, wires, plugs
Fuel;
filter, system cleaner, and cleaned injectors by hand. Also replaced 02 sensor
Vacume and sensors;
Checked for missing vacume lines, cleaned IACV, check all plugs to sensors for a snug fit
Checked with timing gun, its all good and no CEL lights

I am going use some carb cleaner tonight to see if there are any vacume leaks. This is getting to be extremely annoying any help is greatly appreciated.

 

Spark test if not already and fuel man