Re: Tuner to turn off rear O2's
You don't need a full custom tune, most CMR tuners will do it for a very minimal fee, if not for free. If you can find a predator with an old firmware (9r.09 or earlier if I remember right), you can turn them off via the tuner yourself.
2015 Billet Silver
2012 300SRT, 2009 Jeep SRT, 2006 Charger SRT
Too many mods to list for each, so let's just say a lot was done over the years.