Quote:
Originally Posted by Lemosine
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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Hi, I have an MBRP axleback.
How can I make it louder and really rumble?
I just got this axle back and it’s a lot more noticeable than stock NPP. But I want louder.