it takes a couple of months for the system to get broken in. My friend's took 3-4 months and now it sounds awesome considering she's still has stock manifolds and cats. The more you drive it the quicker it'll get to sounding super.
My thoughts exactly.
2017 Camaro ZL-1 A10
2013 Jeep Grand Cherokee Hemi 5.7 - Tuned!!
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