Frequency Intelligent Engineering, Manufacturer of High Performance Valvetronic Exhaust. Switch our exhaust twin sound system by remote control also system will automatic control the valve of exhaust to provide best performance output.
All our exhaust come with valve as standard including our intelligent ECU system which control valve by engine RPM or remote control. Fi Exhaust provide best performance system with unique twin sound system.
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Offical Web Site: http://www.fi-exhaust.com