Re: running rich under boost

[glen.powell@smc.com]

  I believe that 2*2*5 inch unit mounted to the block below the #3 cyl is
  the warm-up regulator. It controls the mixture during warm-up by varying
  the conrtol pressure to the fuel distributor as a function of
  temperature. I believe this only comes into play during warm-up, when you
  should not be pushing the engine into boost. I believe it's the
  CPU-controlled frequency valve that controls mixture during normal
  operation and is responsible for controlling the mixture when under boost
  as well. When under boost the CPU just ignores the O2 sensor and controls
  the mixture based on the remaining sensors.

  -glen