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Beagler
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Diff

Hi, anyone know what diff will be in my 2019 1.6 Sigma 270s

K7 VCT
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Will be the BMW unit, unless upgraded.

Orange is my new black

Ballistic orange 310s
Beagler
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Thank you

2019 270S 1.6

Beagler
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Have a whine that comes in at 50 on power,  goes off on overrun or 60 mph on power

 Cant see it being diff at 11000  miles.  Any ideas. 

2019 270S 1.6

ScottR400D
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It could certainly be the diff. They'll do that at any mileage. 

I'm sure if you contact CC they'll be able to fix it for you. ( Whistle ) Either that or they'll tell you it's normal and they all do it. Well, it is very common but they don't 'all' do it. 

Doc007
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LSD or open?

Beagler
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Rang CC and its a 3.91 BMW Open Diff  whatever open means.  Looking on the net its quite common. Anyone else have this issue.

2019 270S 1.6

aerobod
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whatever open means

Open means no Limited Slip unit installed.

James

Beagler
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Thank you James.

2019 270S 1.6

ScottR400D
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It's a 3.91 ratio (3.91 turns of the prop gives 1 turn of the driveshafts) BMW differential with, as said no limited slip. 

You have the 5 speed Mazda box which comes with a 3.91 diff. If it had had the 6 speed box it would have been a 3.64 diff because the 6 has a lower ratio top gear. 
 

Beagler
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Thanks guys.

2019 270S 1.6