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I bought outlaw mufflers and had a shop make me a custom axle back keeping NPP valves. All for less than $500. Now I have long tubes and its got a nice low rumble and when I close the valves its a lot quieter and no rumble.
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16 2SS M6 // Kooks 1- 7/8 w/Off Road Pipes // RotoFab w/Oiled filter // Custom Axle Back Exhaust // E-85 Sensor // Tuned SOLD!!
Last edited by Lemosine; 05-08-2018 at 12:50 PM.
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