EPROM

[rr]

Just looking at some of the hacs around. . .

BobR.

Louis Baiani wrote:

> Sure it might not be 3.02?  If I do use 3.2, it seems to be innacurate for when it
> actually kicks in...I know for a fact it was 43...  So where did you get this info?
>
> Louis
>
> rr wrote:
>
> > GM commonly uses a MPH * 3.2 term. Might get you closer.
> >
> > BobR.
> >
> > Louis Baiani wrote:
> >
> > > Okay all I can think is to divide the values by 3.  That relatively makes it
> > > make sense.  I think it's kick in speed above out speed, for 4th gear on/off -
> > > which makes 4 values....
> > >
> > > Louis
> > >
> > > Louis Baiani wrote:
> > >
> > > > Okay, anyone understand changes made to the TCC lockup values on a
> > > > 7747?  I suppose for a 6026 no one really understands how it works.
> > > >
> > > > Below is a table of values that have changed from the original stock
> > > > calibrator to a replacement stock calibrator which fixes TCC lockup
> > > > problems.  With the contents in the first colum, TCC lockup occured in
> > > > 2nd gear (noticed if you held it in 2nd).  It engaged at around 16-18
> > > > MPH.  In 3rd, the TCC engages right away - (perhaps speed set too low).
> > > > Same with 4th gear.
> > > >
> > > > Now, with the contents in the 2nd column, TCC lockup no longer occurs in
> > > > 2nd, comes on at 42-43 MPH in 3rd, and similar for 4th (or a bit higher,
> > > > would have to test again).
> > > >
> > > > The 3rd column is values from an ADS powerchip.  The powerchip has TCC
> > > > modifications to it as well - the chip hasn't been tested yet.
> > > >
> > > > So can anyone figure out what those values represent, perhaps comparing
> > > > how they work on a newer ECM?
> > > >
> > > > Thanks,
> > > >
> > > > Louis
> > > >
> > > >  001E4        45        131         96
> > > >  001E5        42        128         89
> > > >  001F8        80        131        128
> > > >  001F9        74        128        120
> > > >
> > > > ----------------------------------------------------------------------------

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