Blowers & the ECM

[Bob Wooten]

as I was talking with the tech @ ATI about their blowers I wondered what
they did about the MAP sensor.  He said "what do you mean, we don't do
anything about it".  this lead to my confusion but then it became a bit
clearer.  he said that all they recommend is that you put in the "proper"
FMU, a "good" fuel pump & maybe a pressure operated retard system depending
on if it starts to knock.  then when I got to thinking about it, it did make
some sense.  when the motor is not under "power" (i.e. not in PE mode) it is
not going to have a pressure >1 BAR.  if that is the case then all is happy
with the map sensor & like wise with the motor.  when you get >1BAR the
motor is under "power", in PE mode then it assumes 1 BAR @ WOT when it is
actually >1BAR & it just does not know it.  the other thing that it does not
know is that the FMU has cranked up the fuel pressure so the motor ought to
be running "OK".

this being said they are kind of tricking the ECM & the tune two ways & not
blowing up motors.  am I right in my thinking that this "works" but is not
"right" or "the right way"?

Tanx.

Bob Wooten
r71chevy at earthlink.net
www.r71camaro.homestead.com

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