Quick question when deleting egr/DPF on '13 and newer models is getting the EGT probe a must or just a recommendation? I don't know if all tuners or kits come with it or just the Smarty MM3 with Warp Delete tune comes with it. I think I have seen it with more than just Smarty so asking for clarification purposes. Can it be added later or does it need to be done at the beginning.
Thanks in advance.
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