I'm thinking along the same lines Bob...just need some other opinions before
I tweak around with the MAP too much. This is mainly being used to
compensate for the blower (which increases VE% anyway) so i'm not too
worried about the drop since boost increases at rpm's increase. (But yes,
there is some degradation in VE%)
Bush is in the lead and all 67 counties have reported! Gore...accept defeat
like a man and stop kicking and screaming about those (democratically
rigged) votes!
- Bernd
-----Original Message-----
From: owner-dakota-truck@buffnet.net
Subject: Re: DML: MAP Voltage questions
I would think so but it's hard to say how much because the MAP and TPS
signals both play major roles (along with O2 sensor in closed loop) in
determining PW signal (fuel amt injected).
The higher the MAP voltage output from the sensor means that the lower
the amt of vacuum pressure. As the throttle plate(s) open (lower
vacuum pressure), the TPS and the MAP signals both increase resulting
in more fuel (higher PW signals) being injected.
The question is how big a role does the MAP signal have in this
PW formula (?).
A couple of other factors to consider. The MAP signal is also used
to figure out the barometric pressure. Above peak torque rpm, volumeric
efficiency begins to fall and less fuel is needed.
Beginning to sound like the 'pregnant chad' problem in citrus land :-)
Bob
This archive was generated by hypermail 2b29 : Fri Jun 20 2003 - 11:57:28 EDT