meh. if it was important enough they would have put it on more cars. they didn't put one on my 2000 S for example. the theory is that (a) better sound, and (b) air racing down the intake slams into closed valves and creates pressure waves that travel back up the intake, potentially interfering with airflow - the muffler attenuates these waves.
EVERYONE removes it. porsche racing removes it. all aftermarket intakes remove it. i suggest you will see negligible, if any power loss, more than offset by the the other gains you will see.
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