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My 93 mx3 has a probe gt engine swap. Im getting the codes pulled, they say I need a Mass air flow sensor, Egr valve w/ position sensor, and 2 02 sensors. I have headers installed and a makeshift RAM intake. Anyone have any suggestions of what I need?

rockauto 02 sensors. DENSO are OEM.

MAF can be taken from working vehicle as a test... or from a jy with a return policy.

EGR can usually be cleaned.

I'm not a v6 guy and don't have an EGR (haha) but thats what I recall.