7747 hiway spk/fuel mode

[Programmer]

Haven't seen the *.ecu file...anyone got a copy ??

Lyndon.
----- Original Message -----
From: den Broeder, Ernst <edenbroe at cisco.com>
To: <gmecm at diy-efi.org>
Sent: Wednesday, January 24, 2001 8:39 AM
Subject: Re: 7747 hiway spk/fuel mode


> What ever you program them to (I hope!).  There is an .ecu file with the
> patch that lets you edit an AFR vs MAP table for the lean cruise mode.
I'm
> starting at 15.0 and working my way up from there.
>
> Ernst
>
> At 08:15 AM 1/24/01 -0700, you wrote:
> >What do your AFR's end up at ??
> >
> >Lyndon.
> >----- Original Message -----
> >From: den Broeder, Ernst <edenbroe at cisco.com>
> >To: <gmecm at diy-efi.org>
> >Sent: Wednesday, January 24, 2001 7:43 AM
> >Subject: Re: 7747 hiway spk/fuel mode
> >
> >
> > > Bob,
> > >
> > > Lean cruise is working now.  I had to apply the esc_done patch to get
it
> >to
> > > work.  Awesome job!
> > >
> > > The O2 cross counts is another variable that could be checked to make
sure
> > > the ECM is in lean cruise mode.
> > >
> > > Thanks,
> > > Ernst
> > >
> > >
> > >
> > > >Ok, just checked some of this stuff out. When in hiway mode, learn
> > > >on the aldl is off. The mpsi 9000 scanner also showed open loop mode
> > > >(this may vary depending upon which status bit the scanner uses).
> > > >
> > > >When the knock test is done, yes, knock counts will show up on
> > > >the aldl.
> > > >
> > > >Yes again, the values at 0xD54A are used for the knock/ESC test.
> > > >The ESC 43 test is actually a 2-parter. Knock is forced, along with
> > > >run-away knock checked for.
> > > >
> > > >The hac has some errors in the comments of these test variables:
> > > >
> > > >d54a & d54b together is the eng run time prior to test.
> > > >d54d is the retard degrees when either ESC 43 test fails.
> > > >
> > > >If you haven't also added the esc_done patch, you may want to. This
> > > >patch sets the 'esc test completed' bit. This allows PE spark and
> > > >hiway mode to be operational without the ecm having to force knock.
> > > >Note the side effects of the patch: The coolant window and time
> > > >delay for PE spark are also bypassed.
> > > >
> > > >BobR.
> > > >
> > > >
> > > >den Broeder, Ernst wrote:
> > > >
> > > > > I've been playing with the hiway747 patch, and I'm not 100% sure
if my
> > > > > calibration is actually even entering this fuel mode.  Is the O2
> >sensor
> > > > > value going towards ~100mV the only indication that the ECM has
gone
> >into
> > > > > lean cruise or will the 'learn control enabled' bit in the ALDL
stream
> > > > > change accordingly as well from enabled to disabled?
> > > > >
> > > > > Are the values at 0xD54A the only factors used to determine
whether
> >the ESC
> > > > > test is done or not?   And will I see the knock counts increase on
my
> >ALDL
> > > > > scanner when this test is done?
> > > > >
> > > > > Thanks,
> > > > > Ernst
> > > > >
> > > > >
> > >
> >
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