Does the DPFE stand for something? I asked autozone to look up the DPFE part and they never heard of that and the computer didn't recognize it.

98 Black Mystique LS Duratec V6 2.5L ATX K&N air filter, cleaned EGR, new Autolite double platinum plugs, magnacore wires, rebuit Sonnax valved VB, TSS, TPS. Mobil 1 5W-30