[ATCfocus]

I'm lost. What exactly is the MIL eliminator/O2 sensor and whats the egr for? Does getting an ORP effect these? And how?

 

[BLrDFCS07]

02 sensors plug into your exhaust in order to moniter it, relays info to the ECU. Any cat-less systems will effect these, throw a Check Engine Light. EGR is Exhaust Gas Recirculation system in which at idle and I believe constant speeds a valve is opened in the system that a small portion of the exhaust to reenter combustion chambers. Simply put, it reroutes some exhaust back into the engine with the new air/fuel cycle. It turns off at WOT, too.

 

[BUR_ZX3]

MIL is synonymous with CEL
MIL = "Malfunction Indicator Lamp"
CEL = "Check Engine Light"