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      08-01-2012, 01:02 AM   #1

Drives: 2012 E92 M3 Coupe
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2012 640i Coupe

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So with BMW's TwinPower Turbo, what happened to the whistle? Aren't I supposed to hear a whistle when revving hard enough? Are there really two turbos in the coupe?
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      08-01-2012, 05:05 AM   #2

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Drives: 640i, 120d, Cooper S
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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
[SIGPIC]"Never a boring car"
Some X'es: BMW Z3 2.8, DeTomaso Pantera, Porsche 928s, BMW 732i, BMW 323i, BMW 2002
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      08-01-2012, 06:44 AM   #3
First Lieutenant

Drives: 2010 BMW 730Li
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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
2012 BMW 640i (AC Schnitzer Package)
2011 Mercedes E250
2007 Ford Mondeo
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