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What HKS has found about "sound"
There should be a performance sound quality whether idling in the morning or at night, daily driving, or during spirited driving. HKS utilizes the latest sound control technology to develop exhaust systems that are tuned to the driver's desire. An unprecedented exhilarating sporty sound from the SSM begins the moment the accelerator is pressed. This exhaust system can arrange the exhaust sound!!
Layout designed for “Appearance” & “Sound Quality”
To control the exhaust sound, all pipes layout after the engine must be taken into consideration. This exhaust system controls the sound by the inner structure of the silencer and lengths of the exhaust pipes.
Tune up the exhaust sound as you like!
HKS Exhaust Manifold (P/N 33002-AN001) + Stock Catalizer + SSM
Enjoy the smoother high tone sound. The exhaust pulsation is dramatically reduced, and the sound level is increased to 90dB.
Stock Exhaust Manifold + HKS Metal Catalyzer (P/N 33005-AN003) + SSM
Well-modulated sound quality can be created. The exhaust efficiency is improved, and the exhaust sound level is increased to 94dB. The exhaust sound is changed to wild.
HKS Exhaust Manifold (P/N 33002-AN001) + HKS Metal Catalyzer (P/N 33005-AN003) + SSM
*Closed Exhaust Noise Level is 98dB, which is not allowed to drive on public roads. Super powerful racing sound is created for a circuit use. Extreme exhaust efficiency changes the exhaust sound to racy like a GT machine.
VIDEO: https://youtu.be/9sJMdSyU2DE