08-01-2012, 01:02 AM | #1 |
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2012 640i Coupe
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08-01-2012, 05:05 AM | #2 |
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Drives: 640i, 120d, Cooper S
Join Date: May 2011
Location: Oslo, Norway
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It's one turbo with double inlet ("twin scroll"), which optimises the flow.
I've never heard any whistling from it - and don't miss it
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08-01-2012, 06:44 AM | #3 |
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upgrade your downpipes and here will hear all the whistling you can ever ask for plus free up lots more power
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