Magnaflow is advertising a stainles exhaust system for the Evoque. For the 3 door coupe #15066 and the 5 door #15065 for about $750. Louder but any performance gain? They say dyno tuned but most statements are about the sound of the system. Unless there is a performance upgrade certified with their dyno results showing a performance increase over the stock system the cost of the system for a performance 'sound' the system isn't worth the price.