Baro check(was BJYM) & PS Ludis

[Dave Zug]

<snip>
> What always threw me off was that I thought there
> was a huge baro correction, but that might not be the case.  So 0'ing the
> baro corrections, and disabling the malfunction flag, might "work"?..
>   The "worst" I'd see would be disabling everything related to baro, and
> maybe
> opening up the BL/INT to dial in the calibration.  Of course this is in
> reference to an off highway none emission application.
> Bruce

In my factory 7727 2bar map application, BARO is read exactly ONCE 
from the map sensor after the checksum and stored for use. Seems 
that if you didn't live in mountainous terrain that you could alter 
the code to HARDCODE a BARO reading insted. .. wait, you're off 
highway so how far up a mountain could you be traveling? ;-) hardcode 
it!  


Its interesting to note here that in my 7727 app, if you DO live in 
mountainous terrrain, your BARO correction will be set at KEY ON 
time, and never re-set until you start the car again. if you're going 
up a BIIG mountain, you're over rich at the top, right? until the BLM 
corrects I guess. My point is that they re-use the MAP to get a BARO 
reading and therefore cannot ever re-check baro cause theres a 
running car attatched to the map. I wonder if this is common?


PS.. the 32k prom trick in the 165 ecm worked just like was suggested 
(thx Ludis!) .. burned the 32k with thge 16k program starting at 4000 
(C000 really) and left the unused 16k area blank. worked fine. 
Dave Z  87GN 12.74 @ 105, 1.84 60' 110 oct,22#
        89 Turbocharged Grand Prix (7727) 
        http://www.delanet.com/~tgp