why the big difference in ECUs?

[Carl Summers]

This I gotta see....Send over one that works and one of that doesn't.
-Carl Summers




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-----Original Message-----
From: owner-gmecm at diy-efi.org [mailto:owner-gmecm at diy-efi.org]On Behalf
Of KasaRyan at aol.com
Sent: Sunday, September 10, 2000 12:16 PM
To: gmecm at diy-efi.org
Subject: why the big difference in ECUs?


Ok. I had a pretty good bin set up for the 94 7427 ecu in my truck.  I
thought I would use tunercat and take all the table values and duplicate it
for the 93 8625 ecu that goes in the truck.  I opened the stock 93 bin up
and
set to changing table values, saved it, burned it, ran it.  The only things
that worked right were idle and wot.  It bucked and jerked and wouldnt run
right and was not very friendly - a digital throttle.  It didnt get any
better or worse when it went into closed loop.  Yesterday I took the 93 bin
and modified the injector size only and tried to run it.  It ran like crap,
so I decided to change all the table values.  It still runs like crap, but
in
a slightly different way.  When I originally got my howell setup, they made
me buy a 94 7427, because Troy said they couldnt work with a 93.  There must
be some truth to this.  Obviously there is some sort of damping factor value
somewhere in the Howell bin that lets this combo work that is not in the
factory bin.  Either way I can't get to it with tunercat.

Does anyone have any ideas of what is wrong - I can zap you my bins.

Thanks for listening to my electroyappin!
Ryan Hampl - a K-State Grad!    kasaryan at aol.com
139 Hoover Ct.                  Controls Engineer (tubes rule!)
Salina, KS  67401               97 B12 / 86 V65 / 93chevy truck EFI 383
phone  (785) 825 5831           I'M ALWAYS FIRST TO THE GROCERY STORE!
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