Do I need MAF and rear O2?
02-09-2010, 05:24 PM
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Do I need MAF and rear O2? I am pulling the rear O2 wires while i'm working my harness cause I was planning on running SD and not run cats. Now about the MAF, in case I decide to stop SD tune and use the MAF do I need the rear O2 sensors in order to run the tune with the MAF?
02-12-2010, 08:23 PM
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Rear O2's are not used to adjust anything. They just report what the air mixture is post cats. You can remove them and the car will run like they're still on. But will throw a code until deleted by a tuner or tuning software like the above poster said.
