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      01-22-2020, 05:53 AM   #4
F10CPROG
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Drives: BMW F10 M5 Competition
Join Date: Jul 2019
Location: Essex, UK

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Quote:
Originally Posted by bmwm51980 View Post
U mean pushing dirt into engine ? That it's sucked in?
Yes - they allow some grit and dust to be sucked in - allegedly.
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