SR fuel problem.. ?

[jing]

Car would suddenly die while driving, no bog. Sometimes it would start back up again, other times it wouldn't. When it does start up, sometimes it backfires then it dies, otherwise it just starts up then dies again couple seconds later. When this first started happening it would only happen after the car had warmed up so I figured it was fuel pump so I got a new Walbro and put that in.

All was dandy until today when it started doing it again, except it starts dying even before it's all warmed up. Got towed home and suspected possible clogged fuel filter? Took that off and tried blowing into it and there isn't much resistance at first but then it slowly becomes more difficult to blow into it suggesting that it's clogged. Picking up a new Z32 filter tmrw and putting that in and hopefully it solves the problem?

If not, what else could it be?

Recent work done:
Spark plugs
Fuel filter
Fuel pump
Nismo FPR
Splitfire coils