Not 100% sure, but I think it is non-resonated. The car was also ECU-mapped and tuned to 510hp, so I'm thinking a non resonated exhaust would be logical to put on.
Thank you very much for the answer. I have the same S8 and I want to tuned in up to 510hp. but i think that only ECU and exhaust will give me not more than 470-480 bhp. Am I right?
Fikk bilen levert med dette ferdigmontert, husker dessverre ikke hvor det var gjort. Mange leverandører av Milltek i Norge så du finner nok lett ved å google litt