Thread: under reading SPA boost gauge
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Old Feb 5, 2006 | 12:42 PM
  #19  
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Jim Galbally
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From: Ramsgate, Kent Drives: E39 530D Touring
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the ecu sees the actual pressure in the manifold..
the map sensor is only an electronic boost gauge, and these can also mis-read, so that statement is not really true
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