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BMW 5-Series (G30) Forum Engine, Exhaust, Drivetrain, Tuning Modifications 540 and K&N question

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      03-11-2020, 09:00 PM   #1
white540
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540 and K&N question

I am not overly excited for any of the current Coi options and while some other companies add options to the market, I was wondering if anyone has dropped in a K&N filter and if it was a worth while change. I did try to use the search function but somehow did not come up with any threads.

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      03-26-2020, 01:58 AM   #2
Frozen Fractals
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I dropped in a BMC intake (FB929/20) and honestly you can't feel the gains. However, if you are running a high octane tune and pushing it, I think it would make an appreciable (if not noticeable) difference.
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      04-14-2020, 09:15 AM   #3
Martin30x
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Yes is worth changing. Got fitted in mine.
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      05-27-2021, 11:08 PM   #4
540iSUP
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I always use K&N rechargeable filters when not using some sort of CAI. I don't know if helps with performance, but I like the fact that I can just clean it and recharge it instead of having to replace with disposable ones.
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