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: IMSA Race
2016 Rolex 24 at Daytona
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23 Feb 2016, 17:01 (Ref:3617046)
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CyberMotor
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Join Date: Mar 2012
Posts: 1,126
Quote:
Originally Posted by
chernaudi
Per Racer's article, they used an old Audi R8 Ultra air restrictor that IMSA and Audi Sport agreed not to run this year.
Up to 40 HP improvement due to the shape of an air filter! Amazing.
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