Yes the charcoal filters is probably worth some HP. I am going to remove mine when i have time to check if my F95 has it.
It would be nice to have a cone style filter installed simply for the amazing sounds that they produce. Don't really care if it doesn't offer any HP as long as it doesn't reduce power. I had a eventuri intake on my F80 M3 and it didn't produce anymore power but the sound alone was worth the money.
Alan
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