Re: 7749 guru needed....

[Ludis Langens <ludis@cruzers.com>]

Barry Tisdale wrote:
> 
> Been working w/ the F29 table (the one @ 0476), VE vs. RPM & MAP, Closed
> Throttle.  Seems to me, the numbers @ the upper left of the table are the
> critical ones here, 600 & 800 RPMs @ 20-30% MAP.  I'm assuming that the MAP
> figure is given in percentage, and idle is gonna be right down at the
> bottom of the percentages, so these four cells are the important ones.

The MAP values aren't percentages - they're in KPa's.  Since 100KPa is
about 1 bar, the headings might look like percentages.

> I would expect reducing these figures, (VE) would reduce fueling, and cause
> the Integrator values to rise.  However, I can take these 4 numbers right
> down to zero and the Integrator readout is unaffected.

I don't know about the SyTy code, but several other ECMs have yet
another table for idle VE.  The rows/cols of this table are in finer
increments than the main VE table.  This extra table overlays the "idle
corner" of the main VE table.  This means that a few entries in the main
VE table are never used.  Perhaps that's why you aren't seeing any
changes from zeroing out the four locations.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


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