Expert's advice:
The Evolution Racewerks S63 catted 200 cell downpipes reduces the backpressure, which results in more power and more torque, and reduces the thermal load on the turbocharger. Made out of high-quality stainless steel, the downpipes replace the OEM downpipes and fit perfectly.
Please note that the catted downpipes can cause problems due to the road regulations in your country.
Mark Hendrikx - Automotive engineer at Mosselman