Department Of Boost
Alpha Geek
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- May 26, 2010
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The drone comes from the "clashing" of sound waves with similar frequencies. Staggering or disrupting the sound waves through other methods reduces/eliminates it. Think of the pipes as a giant tuning fork. If they were perfectly symmetrical, then it would cause drone just like a tuning fork generates a tone when you hit it against a surface.
This is the reason why the factory 5.0 resonators are flattened in different areas on each side. Because of that design, the similar sound frequencies won't bounce off each other because they are going in different directions. Also, if you notice how Borla will design the ATAK mufflers with different size tubes, holes, etc. on the inside of the mufflers, this is how they eliminate the drone at the muffler area while still producing the aggressive free flowing sound.
Science is over-rated.