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I feel cheated, stock S4 only has 250 hp...R8 has even smaller inlets then our K03...

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Old 06-27-2005, 03:33 PM
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Default I feel cheated, stock S4 only has 250 hp...R8 has even smaller inlets then our K03...
But make much more HP & torque.... maybe its the Garretts
From the R8 Audiworld article:
Once having more than 600 hp, today's R8 has been choked down with a 29.9 mm inlet restrictor mounted on each Garrett turbocharger compressor. This brings the 2005 spec Le Mans car down to about 520 horsepower and 700 Newton-meters (516 ft/lbs) of torque. Just for comparison, the Audi B5 S4 biturbo sedan utilizes an opening on each turbocharger of approximately 32 mm and is only rated at 250 hp.
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Old 06-27-2005, 03:36 PM
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It also has more cylinders...
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Old 06-27-2005, 03:37 PM
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and that direct injection
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Old 06-27-2005, 03:43 PM
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Default Low piston speed, better stroke/rod length ratio, generous ports, optimized valve timing and lift.
If nascar guys can do it, so can Audi.
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Old 06-27-2005, 04:14 PM
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Yes, and in a motor designed to last a max 24 hours and move a 2000lbs!
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Old 06-27-2005, 04:47 PM
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It's not the cylinders that matter, but the displacement! : )
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Old 06-27-2005, 07:06 PM
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Yup - I plan on asking for a refund...
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Old 06-28-2005, 06:10 AM
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yes, but a bigger exhaust side
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