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Re: The Rapp on exhaust



  Wrapping a cast manifold or header is definitely NOT RECOMMENDED. I do
  know of at least one Pro-Rally guy though that does wrap the cast Audi
  Turbo manifold and also wraps the entire hot side of the turbo with a
  metallic blanket. I would have thought that this would mean sure and
  rapid death, but so for it is working OK. He claims that the performance
  improvement is very real. I will NOT be testing this on *MY* car!

  I would be VERY interested in hearing any theories on how wrapping the
  exhaust after the turbo will improve performance..... (turbo applications
  ONLY)

  -glen