Remove MIL eliminators before tune?
I recently bought a 2003 GT and it came with an offroad xpipe. The previous owner put some cheap MIL eliminators on but they dont clear the engine code. Anyway I bought a tuner and was wondering If I needed to remove those before I tune the car? If theres one thing im confused about with cars is 02 sensors (which sounds weird lol) but if anyone can chime in that would be great! Thanks
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2003 Black GT - SLP LM1, O/R Xpipe, SR CAI, Bama Tuned, MGW Short throw shifter