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boost controller
• Faster throttle response and quicker acceleration
and for years we've silently worked to create a solution that sets itself apart from the rest
• High quality construction for longevity and easy installation
• Outer set mounting locations allows for wider side mount seats (EVO 2
STM Audi RS3/TTRS Downpipe GReddy boost controllerThe STM 2 Piece 3. 5" Downpipe is the perfect addition to your RS3 or TTRS! Beautifully crafted in the USA, this stainless steel downpipe features a billet v band flange to mate perfectly to your factory turbo, full 3. 5" construction then merged into two 2. 5" outlets to mate up to your stock or factory style cat back exhaust. Three oxygen sensor bungs are included for the factory front and rear sensors as well as an extra bung if you choose to run