Audi S7 Sportback 4.0 TFSI quattro S tronic From 2012 To 2018 Large Bore Downpipes and Hi-Flow Sports Cats - Milltek Sport

Milltek Sport Large-Bore Downpipes are perfect when looking to improve both performance and sound. These downpipes are fabricated with a larger diameter than standard OEM parts, meaning that there is significantly more space for more gas to exit the engine and pass through, increasing efficiency. Combined with our Hi-Flow Sports Cat, you can expect a significant increase in performance and a noticeable difference in sound aesthetic. - Larger-bore 76mm Downpipes with 100-cell hi-flow sports catalysts for highly tuned cars - Requires Lambda extensions leads - Must be fitted with the Milltek Sport cat-back system - Requires a stage 2 ECU remap.