渦流觸媒前段+電子閥門中尾段

The owner had Eddy Catted Downpipe installed, but to bring into full play of stage 2, you will need the Stone Valvetronic Catback System.
 
Upgraded: 
Stone Signature Eddy Catalytic Downpipe
Remote Controlled Valvetronic Cat-back Exhaust System – Dual Valves

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