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Maybe RS4 competitor? BMW has 550xi in the works with a 408 hp biturbo 4.4 liter V8.

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Old 05-25-2006, 01:15 PM
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Maybe RS4 competitor? BMW has 550xi in the works with a 408 hp biturbo 4.4 liter V8.
Old 05-25-2006, 01:25 PM
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That sounds like an intriguing car.
Old 05-25-2006, 01:28 PM
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Default It's from a German Magazine (Auto Bild) so I don't know what the American market plans are. They

claim model year 2009 rollout for a face lift model with new engines.
Old 05-25-2006, 01:44 PM
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Default Interesting but very unimpressive. I would've expected higher output from a biturbo 4.4L V8....

considering the normally aspirated RS4's 'smaller' 4.2L makes more power and the 3-year old RS6's biturbo 4.2L easily trumps it as well.
Old 05-25-2006, 02:01 PM
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Default 550 xi DI = diesel injection. Low HP, massive torque

just read the article- the car is diesel injection, which would explain why it is only 408 hp for a 5.5 L twin turbo V8
Old 05-25-2006, 02:04 PM
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Are you sure it's not a diesel? The N/A 550i has 360hp.
Old 05-25-2006, 02:44 PM
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No, DI is direct injection. It's just like FSI and runs on gasoline.
Old 05-25-2006, 02:45 PM
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Default Gasoline. Expect a super torque curve like the 335 biturbo.

The 335 biturbo doesn't have much more horsepower than the normally aspirated 330, but the torque difference is amazing. The 335 peaks at 1,300 RPM.
Old 05-25-2006, 02:57 PM
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Default some tuning and it's M5 territory and 25K less (guessing)

Xi too..... damn, AWD Bimmer......
RWD version too I hope.
Old 05-25-2006, 03:01 PM
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Default Yes, most will probably sold as RWD. I bet you'll see the traction control light blinking an aweful

lot though with the kind of torque this thing will be putting out.
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