OK Heres whats happening, bought a fuel rail a while back, then I got a 240SX throttle body, then I bought myself a fuel pressure regulator.
Well the other day, I put the new fuel rail on, at the same time I put in new plugs, wires, cap and rotor. I did use NGK plugs but a step colder, BPR7ES11. Car wouldnt start.
Checked and rechecked plug wires to make sure they were in the right order. All is well. Found out bad running was from dirt in the chopper wheel on the CAS.
Cleaned that and car ran well at idle that is. Took car out for a ride and starts chugging and bucking, like it has a timing issue.
Plugs are still good, a little to dark then what they should be but still good, Checked timing, timing was good.
Replaced the CHTS, because I had a spare new one, put on the aforementioned parts, AFM was 2 teeth to the rich, returned to stock position, fuel regualtor at stock pressure.
When the car is cold idles fine runs fine, once the car is up to temperature, idle gets bad, thats when it seems to go out of time, or lope and chug when driving.
The air fuel gauge goes wild as well.
Now I did get one or two backfires threw the AFM, I havent tested it yet, but I cant believe as I was driving the car that morning and it ran well that just doing what little I did would result in the car not running.
HELLLLLLLLLP!