7747 hiway spk/fuel mode

[Programmer]

Well...I'd still appreciate it...

Lyndon.
----- Original Message -----
From: <chetwagner at qwest.net>
To: <gmecm at diy-efi.org>
Sent: Wednesday, January 24, 2001 12:13 PM
Subject: Re: 7747 hiway spk/fuel mode


> I have the ecu file that will work with the modifications.  If it is
> needed by the masses, I will try to post it to incoming.  I may not be
> able to place it in incoming, haven't been able to do that for more
> than a month.  If anyone wants it, let me know.
>
> On 24 Jan 2001, at 11:21, Programmer wrote:
>
> > 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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