98infiniti i30. Intermittent lack of exceleration

[Yellowfin]

Think I have more than one problem but can't afford 130hr for 3700$ car. Trouble code po325 came up so replaced knock sensor and wire with pigtail. Code went away but now having ocational hesitation on excelerationTrouble. Idles fine but when operating under normal temp, ocationaly starves for fuel, then upon opening it up to 4000 to 5000 rpm symptom goes away. No check engine lights comming on,lost at this point