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      07-18-2019, 10:29 PM   #3
sspade
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Drives: F30
Join Date: Oct 2017
Location: Stevenson, WA

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2016 BMW 320i  [7.87]
2014 BMW 328i  [6.83]
You really shouldn't be running stage 2 without an upgraded FMIC and CP.

I wonder if you do indeed have a boost leak. They can be whiny / whistly.

Also... the drop in filter is definitely increasing turbo sound. Could be just that, by itself.

Have you scanned for codes?
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