OK, so I am looking to possibly delete soon, I will go with the MM3 lite most likely from what I have read about it. I am looking for longevity and reliability more than lots of power. My main question here is: Do you need to go with a full exhaust system? or are the delete pipes going to be just fine? From my prior experiences with my old 98 and older cummins was that anything over 4 inch was kind of a waste unless you were going well over 500hp.
Also do the delete pipes remove the muffler, or just the DPF and SCR?
Thanks for any and all feedback guys
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