Milltek VW Golf MK7/7.5 R (inc. Estate), S3 8V (13-17) Cast Downpipe with 200 Cell Race Cat (Fits Milltek Cat-back Only) ECOSPORT Audi A3/S3/Sportback (8P Pre-Facelift 2009-2010)

Audi A3/S3/Sportback (8P Pre-Facelift 2009-2010)

impressive looks -you can have it all

5 R Estate

AFTER | WITH PRO-KIT

Rieger VW Polo GTI MK6 Rear Diffuser

Milltek VW Golf MK7/7.5 R (inc. Estate), S3 8V (13-17) Cast Downpipe with 200 Cell Race Cat (Fits Milltek Cat-back Only) ECOSPORT Audi A3/S3/Sportback (8P Pre-Facelift 2009-2010)Your original catalytic converter will typically have 400 or 600 Cells per square inch (CPSI) these original cats are restrictive in their flow typically allowing an open area of around 55 65% Milltek Sport Hi Flow Sports Cat which will be fully integrated into a large bore downpipe has only 100 200 CPSI depending on application These cats have an open area of between 75 85% thus reducing back pressure substantially and increasing flow rates all very