JettNebulis

Well long story short my 92 240sx KA24DE at idle will bog out and die. While driving it at a steady speed it feels like it's cutting out and it jolts. I replaced my fuel pump relay to see if that would fix it and needless to say no it did not. I have dumped about every chemical under the sun to fix it (nope). Have any of you had the same problem and know of any fix.

Mods (if you can call them that)
Shitty knock off radiator
Shitty Knock off exhaust cat back
Shitty coolant overflow
Some Random pod filter (recently cleaned)

I love the car but after replacing a motor, it blowing up a radiator full of steam and boiling coolant (giving me second degree burns on my face), and now this. This car is making it really hard to love thanks primarily to the ricer before me.