[Gmecm] More '730/$8D tuning questions...

[Clair Davis]

Well, I'm at a loss.  I've tried to copy over the necessary bits of my
previous tune attempts (injector size, displacement, etc) to both AXXC and
AXXD, supposedly known-good 5-speed .bin's, and in every case, they drop in
to limp-home mode almost instantly.  The only code I can retrieve is 12,
ECM, so something is very seriously wrong.  If I'm switching .bin's on the
fly, I can upload my old last attempt, and all gets better.  SES/CEL goes
out, mixture leans out to stoich +/-, and MAP jumps up in to the mid 40's.
I've been through almost all of the various items you can edit through
TunerProRT, and anything obviously strange is evading me at this point.  I
think about all I can do is go through the various tables that appear
related to an auto trans in my .bin and copy in the parts of the 5-speed
.bins I have (AXXC/AXXD/.  I don't know what that will really do for
drivability, but at least it makes it a bit more "right".

Now for the question.  My gut feeling is that I need to seriously adjust my
Accel and Power Enrich functions to make this thing more drivable in the
near term.  I believe this is the case because when the car is in warm-up
mode, throttle response and transition is pretty dang good, but AF is in the
11-12 range.  I think that's fat enough to cover most enrichment sins until
it goes to closed loop.  Where can I find a good description of the
variables in these functions?  I need to be able to change the variables
that make the greatest contribution to the adjustment factor.  So far, the
XDF file for TPRT hasn't really given me what I want, and the book I got
from Customefi's has only discussed the BPW this way.

I'm eventually going to need the same formula info for the spark advance,
but I think PE/AE is the big problem at the moment.

Thanks again,

Clair


----- Original Message ----- 
From: "Clair Davis" <clair.davis at charter.net>
To: <gmecm at diy-efi.org>
Sent: Friday, April 20, 2007 8:40 PM
Subject: Re: [Gmecm] More '730/$8D tuning questions...


> Robin,
> On googling, I found this thread on 3rd Gen.org regarding a corrupted AXXC
> that's out in the wild.  The ALDL function (or lack thereof) seems to be a
> common issue.  Here's the thread:
> http://www.thirdgen.org/techboard/diy-prom/409989-axxc-bins-no-good.html
> They provided a link to an apparently good version, which I'll download
and
> compare to another that I have stored.  I made a point shortly after
getting
> my hardware/software of collecting as many bin's as possible for reference
> purposes.  I'm fairly sure my "bad" AXXC came from the same sources listed
> in the TGO thread.  It looks like another option is to go with AXXD.
>
> Also, FWIW, the two .bin's I supplied that have the top vector set to
$0000
> are related.  The AFI bin is the original I pulled from the tweaked memcal
> provided to me based upon my stated requirements, and 003 is the result of
> my changes to that file, specifically in injector size, cylinder vol,
> timing, and VE tables.  They should otherwise be nearly identical.
>
> Clair
>
>
> ----- Original Message ----- 
> From: "Robin Handley" <Robin at FuryWorld.fsnet.co.uk>
> To: <gmecm at diy-efi.org>
> Sent: Friday, April 20, 2007 2:45 PM
> Subject: Re: [Gmecm] More '730/$8D tuning questions...
>
>
> > Interesting.
> >
> > Clair sent me 3 .bins, which I have each compared byte-for-byte with
ANHT.
> >
> > The .bin that calls itself AXXC differs massively from ANHT ($8D), right
> > through (including code). This indicates to me that the .bin calling
> itself
> > AXXC isn't $8D. Is this a fair conclusion, or are there different code
> > versions of $8D?
> >
> > The other bins only differed from ANHT in the calibration area, but both
> had
> > the top (warm start?) vector set to $0000, whereas ANHT has it
(correctly,
> > IMO) set to $B000. Should these two bins run at all?
> >
> > Certainly, since all their code is the same as ANHT, AIUI their ALDL
> should
> > behave exactly the same as ANHT, and I've used ANHT ALDL w/o any
problems,
> > with ALDLMON and my own s/w. Have I missed anything?
> >
> > Robin
> >
> > _______________________________________________
> > Gmecm mailing list
> > Gmecm at diy-efi.org
> > Subscribe: http://lists.diy-efi.org/mailman/listinfo/gmecm
> > Main WWW page: http://www.diy-efi.org/gmecm
> >
>
>
> _______________________________________________
> Gmecm mailing list
> Gmecm at diy-efi.org
> Subscribe: http://lists.diy-efi.org/mailman/listinfo/gmecm
> Main WWW page: http://www.diy-efi.org/gmecm
>