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687 wtq @ 4
5L V8 BiTurbo
Our intermediate level ECU upgrade for the Mercedes M278 engine still offers huge gains in performance across the entire RPM range
TCU Upgrade: TCU upgrade delivers faster acceleration by matching the power output of our ECU and Turbo upgrades with increased Clutch Torque Limits
preventing leaks of fluids like oil
RENNtech Stainless Steel Sound and Performance Pipe for 221 - S 63 AMG porsche-cayenne--9pa----1-gen--cayenne-s-esr4197557 687 wtq @ 4RENNtech 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.