Milltek 2.5" High Flow Downpipe - Audi B9 / B9.5 | S4 | S5 | 3.0TThe Milltek Downpipe & Hi Flow Cat is engineered to elevate your vehicles driving experience! By optimizing exhaust flow, this high quality component increases engine efficiency, resulting in noticeable gains in horsepower and torque. Key Features: Optimized Performance: Improves exhaust flow for enhanced power output. High Quality Construction: Crafted from premium materials for durability and longevity. Direct Fitment: Designed for seamless

Chrome Silver or Diamond Black

Required Hardware Intercooler

Driver Side Engine Mount

Flashed directly through the (OBDII) Diagnostic port of your vehicle

Combine this with the aforementioned in-house machining and the result is a wheel that fits more applications than we can count

and benchflash ECU Tune

970 GTS Drop-In Air Filter

-sourced CNC mandrel-bent

FITS: All B5 Audi A4 FWD 99-01

while being able to squelch drone 100%

Our high-flow bellmouth is neatly housed in a heat shield

vague response in the vehicle's powertrain