My guess is that someone tried to install active exhaust cat back thinking they could activate thru Forscan then found out that the PCM has it on lockdown without using tuning software. Check to see if the actuators and cables are in place as well. This thread is a long read but it is what I...
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Forgot to post after pics. mine was done first week of Feb, car was gone for two days and shows no ill effect from being sent out in the middle of coldish weather (20-30*F).
Was having so much fun taking pictures of my dog during (almost) total eclipse that getting one with my 'stang was an afterthought. about a minute after (96%) it's peak here... was mostly clear until just before peak then the clouds took over.