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Old 03-16-2018, 09:45 AM   #2
BMWM.D.

 
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Drives: ZL1/335i
Join Date: Apr 2014
Location: Santa Barbara
Posts: 870
Are you talking about the noise you hear under part load — say half throttle? Most open filter intakes sound like this, but I don’t hear anything from mine at light throttle or a steady cruise. Under some load, yes.

And for what it’s worth, I had issues at first getting the heat shield seated. One of the mounts is adjustable, and tweaking it made all the difference. Getting all the silicone hoses aligned can be a little tough too. You sure you don’t have any air leaks from the couplers?
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