RenierR10
Well-Known Member
- Thread starter
- #1
Has anyone put on air intake or a K&N air filter? I put on the HKS air filter on today. I don’t know is it’s placebo but I swear you can hear the turbo much better. I also took out the charcoal filter that goes under the air filter, which I remember made a difference in the F80 M3.
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