i wonder if there's a new patent on this specific design?
ARK has a HFC with helmholtz resonators also for a while but the design is different of course, length of the helmholtz chamber and location.
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RHM 75mm TB & ported up/low mani., 3" intakes/velocity stack, Z1 Headers, Motordyne ART pipes, HBP 3.5" exhaust, Tein MonoSport, SPL F/R arms, endlinks, and tie rods , Eibach sways, Z1 rotors F/R, diff bush., subframe collar, Bell Raceworks diff brace
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