Suburban 454 / 7.4 Exhaust Options in 2015

Supercharged111

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How is the sound on the muffler. Walker tech told me buss muffler would be louder than standard large body truck muffler(4" in/out)

It's louder than a stock 454 GM muffler, but still nice and quiet inside the cabin. It's nowhere near as loud as a performance muffler or even a turbo muffler.
 
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