Quote:
Originally Posted by M3SQRD
I recently swapped out the stock air filter on my '12 with an aFE drop-in filter (had to buy the adapter) and I noticed a significant change in induction noise - definitely louder than the Euro stock filter, and similar to the noise level from the Dinan intake I have on my '09.
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Quote:
Originally Posted by BMW Fanatic
Are you running a dried one or oiled? I have an oiled one and can personally say that idle revving has a bit of a deeper tone as does the downshifting sound, ripping it through red line is the same though.
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Then I must be experiencing a placebo effect and my idle mind is f-ing with me.
I'm running a dry MS Air Filter w/ some AFE intake charge scoops. Maybe I'm just not recalling what the stock filter sounded like and perhaps the MS filter is really working as planned. Oh well, I'm not going in there to replace it back to the stock one - it was already a pain one time changing out that stupid plastic adapter as-is.