RENNtech Stainless Steel Sound and Performance Pipe for 221 - S 63 AMG audi-rs3--8p---2006-2012--2-0l-tfsi-esr9413817 384 lb-ft @ 1

384 lb-ft @ 1

CLASS R (W 251) 500 4-matic [2 Filters Required] (HP: 306 | Year: 05 > 07)

Matching the RENNtech CPC tune to third party ECU maps requires additional steps

the CLS 550 gains up to 105 HP and 262 LB-FT

C167 - GLE Coupe GLE53 AMG (Airmatic Optional)

RENNtech Stainless Steel Sound and Performance Pipe for 221 - S 63 AMG audi-rs3--8p---2006-2012--2-0l-tfsi-esr9413817 384 lb-ft @ 1RENNtech Stainless Steel Sound and Performance Pipes for 221 S 63 AMG. Gaines: +10HP & 15TQ Our performance and sound pipes with integrated x pipe bypass the stock Mercedes resonators for more volume and a better sound. Combined with RENNTECH's ECU software and stainless steel headers, the sound pipe produces more power in the mid to high rpm range. High strength 304 stainless steel construction ensures lasting quality and a rich, consistent sound.