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      06-04-2019, 03:53 PM   #11
BMWDriverX
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Quote:
Originally Posted by E55 Bulldog View Post
Maybe things have changes but over the years of having big turbo trucks, K&N was a no-no. There is enough evidence out there that they allow enough particulate through to chew up the blades on a turbo. A quick google search will show it. This is just what I know from years of turbo engines on diesel trucks. Now that forced induction is A LOT more common on cars now, maybe the product has gotten better. I just like to air on the side of caution after rebuilding 2 turbos.
Yeah but also think of every Skyline, Supra, RX7, 3000GT, Eclipse, etc. all the cars that have been running on forced induction since the 90's were all running K&N or some other variant of paper/oil filter and those cars were all fine running for over 100k miles reliably.
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