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X51 Manifold VS. Vario Ram

  • 2002
  • 911 Carrera 4 Cabriolet
Mileage: 
70 000
Engine
Riverbank, 
California

Is there any performance gain in exchanging the Vario Ram intake with an X51 intake manifold?

I am having the engine reworked to 4.0 liters.

Thank you,

David Dunn

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