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Thread: RS6 Cold Air Intake Options

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  1. #1
    Registered User Bigglezworth's Avatar
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    Mar 2007
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    You guys all kill me. This is NOT a NA ride. Increasing air flow to the turbos is a fruitless effort as the amount of air that passes through the turbine is restricted by diameter of the inlet on the turbine housing. It's THAT simple. That diameter is smaller than the diameter of the pipes feeding the turbo. Making those pipes any larger simply isn't going to help. If you are able to stuff in a larger turbo with a larger diameter turbine, then yes you can benefit from a slightly larger air feed, but you will still always limited by the restriction point at the inlet of the turbo.

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    '02 S6 Avant Silver - Pokey | Carbon Black/Ebony RS6 w/ stuff - darn quick | '03 Daytona Grey/Ebony RS6 w/ more stuff - quicker yet | '91 NSX CDN issue with 6spd & BBSC - quicker yet and then some | '87 Buick GNX OEM clone w/ lots of stuff - quickest hands down

  2. #2
    Registered User ttboost's Avatar
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    Quote Originally Posted by Bigglezworth View Post
    You guys all kill me. This is NOT a NA ride. Increasing air flow to the turbos is a fruitless effort as the amount of air that passes through the turbine is restricted by diameter of the inlet on the turbine housing. It's THAT simple. That diameter is smaller than the diameter of the pipes feeding the turbo. Making those pipes any larger simply isn't going to help. If you are able to stuff in a larger turbo with a larger diameter turbine, then yes you can benefit from a slightly larger air feed, but you will still always limited by the restriction point at the inlet of the turbo.

    Tag - you're it...
    Forget it Tim...

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