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There was a thread that talked about this set up. I don't think it ever made it to the dyno. The change in sound was enough to get them removed. I have the DNT's on my 2012. I did have an Appt for a Dyno tune but the Dyno to a crap so the owner run a auto tune on it. I will have it Dyno'd in the spring. I love the sound but the tune is still missing something.
DNT's are hard to to tune, been through this (ask Jamie from Fuelmoto, he provided advisement and built maps for me) and never was satisfied. The stepped baffles are an issue. Sounds good but never got any performance. Autotune with a PV totally ruins a base map.
As posted, These are near impossible to tune. The TTI's did help regain the low end torque, but, I felt as if my top end suffered as a result. Just switched to Rineharts and couldn't be happier.
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