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Re: CPU-controlled '88 ur-Quattro WG?

  I believe the IA Stage II mod just adds additional advance (actually
  reduced retard under boost) and is also EPA approved vs the origianl IA
  mod (Stage I). I usually run 2.0 Bar or even a tad higher (15 PSI) with
  no problems. I have run as high as 17-18 PSI on the track, also with no
  shutdowns or other problems. You may have a problem with the inlet-temp
  sensor if she shuts down at or around 4000 RPM.