Muffler Repair At Autosys is located at 18018 Redmond Way, Redmond, WA. This location is in the Southeast Redmond neighborhood. This business specializes in Automotive Oil Change. Muffler Repair At Autosys is open Mon - Fri, 8am - 6pm; Sat 8am to 4:30pm, closed Sun and accepts American Express, Cash, Discover, Mastercard and Visa.