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Hoping someone can help me out here. I have a 06 Mustang GT that is failing emmisions because the "Catalyst" is "NOT READY." I am running the preloaded SCT 93 tune with the Rear 02 sensors enabled. All of my rediness checks are on except this one, but when using a scanner to check for rediness I looked at the 02 sensors and while they are on, they both give the same exact readings, which makes me thing they are just generic values. I cannot return to my stock tune as I have a JLT cai and threw away the factory airbox. I have tried the drive cycle numberous times, gone 300 plus miles and cannot get this catalyst ready.

Was wondering if anyone had any input on what needs to be done next? maybe try running the 87 tune? I haven't tried this yet as I don't know much about what the tuner actually does and wasn't sure if changing tunes would help anything other than making me drive another few hundred miles.

thanks in advance
 
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