











W205 C300 — Anyone Running Downpipe + X-Pipe + Valved Muffler Setup? (Looking for AMG
I’ve got a 2019 Mercedes-Benz C300 (M264 engine) running a JB4 tune and Armaspeed intake, and I’m planning out my next exhaust setup.
I’ve talked to a few local shops — one recommended doing a straight pipe in place of the resonator, while others say an X-pipe helps smooth the tone and bring out a cleaner euro/AMG-style sound.
Here’s the setup I’m considering:
- PLM high-flow downpipe
- X-pipe in place of the factory resonator
- Valved rear section (valvetronic mufflers or similar)
Has anyone here done something similar on their W205 C300 (M264)?
If so:
- Did the X-pipe make a noticeable difference vs straight pipe?
- What mufflers or valved setups worked best for tone and flow?
- Any drone or rasp issues I should expect?

