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      01-17-2020, 08:08 PM   #9
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Drives: BMW X5 M50i
Join Date: Nov 2019
Location: Northwest North Korea

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Quote:
Originally Posted by Dr. Jekyll View Post
What's the difference? Wouldn't they all be drop ins?
Drop ins use the stock air box. You keep all the factory restrictions, but just get marginally better air flow versus paper filters. Most would prefer a whole new intake with larger surface area on the filters and less restriction on the pipes for MAX power.
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