Scorpion Resonated Non Valved Cat Back Exhaust System w Daytona Tips Sunset Hills Cemetery in Flint, Michigan Find a Grave Cemetery. One of the VAG group of companies Audi really got noticed as producers of performance road cars in the early 80s with their release of the legendary Audi Ur Quattro the worlds first all wheel drive turbo production car. A real game changer which went on to win numerous world rally championships and sowed the seeds for their future high performance road cars. Scorpion has a heritage of producing high quality performance exhausts for these legends of the 80s through to the highly sought after performance models available now. Scorpions offers an extensive range for the Audi S3 (8Y) 2. 0 turbo models. Starting with a 80mm 3. 15 Cat GPF back system available as resonated, non resonated, valved and non valved all finished with a choice of polished, black ceramic coated or premium carbon Ascari tailpipes. The various options allow you to build a performance system to suit your individual needs and preferences. A valved and resonated system is more in line with the OE system whilst giving improved performance and a slightly deeper tone this would be our recommended option for a daily drive. At the other end of the scale there is the non valved and none resonated option for those wanting all out sound and performance.