[Gmecm] Adjusting 7730/$8D for larger cam

[Clair Davis]

With regards to going to a heated (3+ wires) O2, is it simply a matter of
running a power wire and ground wire, or is a 7730 capable of running one
already?

Clair


----- Original Message ----- 
From: "JohnsHome" <JohnsHome at wideopenwest.com>
To: <gmecm at diy-efi.org>
Sent: Saturday, February 03, 2007 3:59 PM
Subject: RE: [Gmecm] Adjusting 7730/$8D for larger cam


> Clair and Bill,
> I'm up to around bin#75 myself :)  (many sub-versions of 0-F too for use
> with the 16 switcher)
> Don't forget you can copy the "****.log" file that TP makes each time you
> change the bin.
> Do a "save as.." first, then make the changes you want to try.
> If you just make changes and then do "save as.." to make a new file and
keep
> the old one intact,
> You won't get a log file.
> Keep those with your versions and it will help to see what you did
before...
> Eventually when you have to start over (and you will, Its inevitable)
> history can get you on the right path again.
> you shouldn't need to rename your XDF unless you make a "definition" adder
> or change that you want to be sure you use the most up to date file.
> Too many files can be problematic too with multiple computers, but rev
> numbers will help keep your sanity.
> John
>
> > -----Original Message-----
> > From: Bill Shaw [mailto:b.shaw at comcast.net]
> > Sent: Saturday, February 03, 2007 9:38 AM
> > To: gmecm at diy-efi.org
> > Subject: Re: [Gmecm] Adjusting 7730/$8D for larger cam
> >
> >
> > Hi Clair,
> >
> > Congrats on getting it running.  I save into a new file every time I
> > save,  keeping a copy of every one I burn,  as well as a text file
> > describing each and every single change in each version.  I'm up to
> > mybbzb69.bin at the moment,  will probably go through a bunch more with
> > the new engine.  Disk space is cheap.
> >
> > Bill
> > 928s 5 sp. Vortech/749
> >
> > Clair Davis wrote:
> > > John,
> > > Question regarding the O2 constants you mentioned...
> > >
> > > In the Constants/Scalars section, I've got:
> > > 0.60V at 496 (Idle O2 Rich/Lean Threshold Fast)
> > > 0.60V at 497 (Idle O2 Rich/Lean Slow Zero Error Upper)
> > > 0.56V at 498 (Idle O2 Rich/Lean Slow Zero Error Lower)
> > >
> > > Are you saying to knock them all down by 0.04 - to 0.54, 0.54,
> > and 0.52?  I
> > > haven't done that yet, but I can before I burn again.  I bumped the
idle
> > > spark advance at 800rpm up to 24.96* from 20.04* in the Closed
> > Throttle vs.
> > > RPM table.  That's the same as the 1200rpm point, not a big
> > bump, and this
> > > engine likes idle advance.
> > >
> > > With some luck, I'll get to try this out tomorrow, and see what
> > the BLM's
> > > look like as well.
> > >
> > > On a semi-related note, what are some thoughts on saving
> > versions of bins to
> > > help track progress?  I've got very few changes at this point,
> > so I've been
> > > keeping essentially a single file so far.  I can see how I'll
> > need multiple
> > > files in the very near future, and I'd like to keep up with
> > what has been
> > > changed.  I'm thinking date-stamp-type file names, but that can get
> > > ungainly, and the XDF would have to be changed at the same
> > time.  Maybe no
> > > biggie, if I keep the date stamp in a directory name.  There
> > must be some
> > > tidier ways, though.
> > >
> > > Thanks again,
> > >
> > > Clair
> > >
> >
> >
> >
>
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