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      03-09-2018, 12:16 PM   #12
Bartledoo
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Drives: 2011 E90 M3 6MT
Join Date: Aug 2015
Location: Seattle, WA

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Quote:
Originally Posted by Richbot View Post
I think you can hear more valvetrain noise at idle but once you get moving it doesn't seem any different to me. I dig this mod for this car so far after driving it a couple days it seems like a no-downsides thing, assuming you don't mind bypassing a factory safety device and can be trusted to remember to close and latch your hood

I don't think the factory filters did all that much for exterior smells. I worry about dust in the HVAC/heater core but I run around with auto-recirc on all the time so hopefully that sensor works. IT's notlike I live in the desert
Mine didn't even have a hood sensor...odd.
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