Audi A4 1.8T w/GO-Sheng F1Exhaust&Intake db Test(Valve on/off)

Upgrade your silent exhaust

Your exhaust system could be quiet & loud at the same time

PM, or email us at gos.f1exhaust@gmail.com for more details

 

 

Official website:go-sheng.weebly.com/

FB:www.facebook.com/GSTexhaust

YouTube:goo.gl/T1tO8H

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