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I think any after market louder exhaust is going to have more cabin drone than stock. Hell, I noticed a bit (very minor) of cabin drone with stock exhaust & a drop in k & n filter & carbon filter removal.
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'07 RCSB 4x4, 5.7. Much Faster than my modded Hemi was. Insulated intake & box. Drop in K&N. Removed top filter. Bypassed TB coolant hose to keep intake cold. Valve cover hoses to breather, not intake. 305-50-20 Yoko's on 20 x 9 chrome MB 5 spokes, Debadged, More to come...
WANT TUNER!
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