Thinking about removing resonator...
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2003 W211 E55, 2003 W220 S600
Setups
Remove secondaries and resonator and keep factory H pipe will be a bit louder than removing resonator and secondaries and factory H pipe.
If you want louder then gutt the mufflers.
Remove secondaries and resonator and keep factory H pipe will be a bit louder than removing resonator and secondaries and factory H pipe.
If you want louder then gutt the mufflers.