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although we usually recommend the help of a professional for fitment
and driving styles
SSXTY122 – 3″ / 76mm Resonated OPF/GPF Back System with GT-115 Polished Trims
The struts are easily installed in 5 minutes
The factory grille leaves provisions that allow intake air into the inlet duct on the passenger side but leaves out a direct flow-path to the air inlet on the driver's side
034Motorsport Stainless Steel Racing Catalyst, B9 Audi S4/S5 Unit although we usually recommend theProduct Description: The 034Motorsport Stainless Steel Racing Catalyst for B9 Audi S4 S5 is designed as a drop in replacement for the restrictive factory catalytic converter. The Stainless Steel Racing Catalyst offers increased horsepower and torque throughout the powerband, reduced turbocharger lag, improved throttle response, and an enhanced exhaust note. This upgrade eliminates the primary flow limitation in the factory exhaust system, allowing you