(VZ17a / TP48). Vauxhall Corsa D SRI 1.6 Turbo (10-14) 3" Exhaust System Resonated. (Resonated - Quieter). What is the difference between resonated and non-resonated systems?. Resonators are box chambers incorporated into the exhaust system, which are used to make the exhaust quieter, by cancelling certain sound frequencies.
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