STM Audi RS3/TTRS Downpipe GReddy boost controller

boost controller

Designed with oval mufflers to prevent highway drone

or to Output the wideband signal to an external device you'll need the LM-2 Analog IN/OUT Cable optional accessory

and for years we've silently worked to create a solution that sets itself apart from the rest

slight lope at idle

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