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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications K&N / Pro Dry S filter option
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      08-08-2020, 02:24 PM   #1
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K&N / Pro Dry S filter option

I've spent a few months researching air intakes for my N55 (I know they don't add noticeable HP, but I like the look and sound) and finally came up with my ideal system. I hope this gives you all a new option to consider.

What I didn't want:
-A drop in high flow filter, no sound improvement and no need for more airflow.
-A shorty intake that's open to the hot engine compartment.
-A $500+ full intake system.
-An oiled filter of any kind since I have had to spend hours cleaning out intake manifolds and sensors that get gummed up.

My solution:
-Created a saved search for K&N 63-1132 on eBay that sent email alerts when a new intake was listed. This intake has a seal that presses against the hood preserving the cold air intake function. They are $250 brand new.


-Removed the oiled K&N filter and took measurements.
-Found the closest AFE Pro Dry S filter (AFE P/N 21-90054), $90 new.


-Installed the K&N intake on my N55 and the Pro Dry S filter bolted right up. It doesn't have as much surface area as the K&N filter, but I'm okay with that. I'll rotate it 180 degrees every 5-10k miles and wash it when needed.

Last edited by 2013F10; 07-20-2021 at 01:50 PM..
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      08-08-2020, 02:31 PM   #2
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Just saw one listed in here the classifieds for $135 in case anyone is interested (Not mine).
https://f10.5post.com/forums/showthread.php?t=1746335
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      08-10-2020, 08:17 PM   #3
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Its not 100% sealed against the hood. You'll still get some heat soak
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      08-10-2020, 08:57 PM   #4
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I read that the afe adds noticeable power. But it's $500. But is a true cold air system. I like your setup. Could there be a way to seal the top so not to have heat soak?
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      08-11-2020, 10:06 AM   #5
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Quote:
Originally Posted by Trainwreck914 View Post
I read that the afe adds noticeable power. But it's $500. But is a true cold air system. I like your setup. Could there be a way to seal the top so not to have heat soak?
K&N shield kit seals really well against hood insulation.
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      08-11-2020, 01:01 PM   #6
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Quote:
Originally Posted by Trainwreck914 View Post
I read that the afe adds noticeable power. But it's $500. But is a true cold air system. I like your setup. Could there be a way to seal the top so not to have heat soak?
You absolutely won't notice any power increase with the aFe in day to day driving.
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