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RE: ECU file format bug or gray matter loss? [was Re: Idle Block Learn Cell ??]
I looked up some of this stuff and here's what I found...
1/(#hr/3600*453.59237)*1280 -- use this to get your value. 261 (dec) = 38 #/hr according to
this, and 462 = 22#, 423 = 24#.
Check this against your values if you get a chance.
Squash
--- trax <trax@frederickmd.com> wrote:
> Mike,
>
> When comparing WinBin and TunerCat I find that many things differ. Geez -
> where do I start:
>
> Fan Temps are completely different.
> RPM fuel cut and return are different
> Cold, Warm, and Hot closed loop timers are different
>
> and ...
>
> INJECTOR FLOW RATE is different. TunerCat programmed for 24.1lb/hr ...
> WinBin shows 2.56 g/s = 20.3lb/hr
>
> These are the noticeable ones. I am using the .ECU file that I believe you
> sent me via e-mail ... or pointed me to the correct website. TunerCat
> doesn't use .ECU files.
>
> I haven't had any problems with TunerCat and it is much easier to use. I'm
> getting pretty close to my 31 day trial period so I am pretty sure that I'll
> be purchasing it.
>
> Tim
>
>
>
> >-----Original Message-----
> >From: owner-gmecm@diy-efi.org [mailto:owner-gmecm@diy-efi.org]On Behalf
> >Of Michael Davis
> >Sent: Tuesday, June 13, 2000 10:52 AM
> >To: gmecm@diy-efi.org
> >Subject: ECU file format bug or gray matter loss? [was Re: Idle Block
> >Learn Cell ??]
> >
> >
> >
> >I don't know if this has been hashed out before, but I can't see, to
> >rationallize the conversion limits of the .ecu file format for an
> >equation of the form:
> >
> > eprom-value = constant / converted-value
> >
> >It appears to me that the .ecu files are setup to either multiply or
> >divide the eprom-value by a constant, but don't have provisions for
> >doing the 1/x inversion as needed above.. Am I missing something?
> >
> >I found this bit me in the A$$ twice now with the 7730v3.ecu file
> >with both the AFR and the base injector (g/s) settings..
> >(I've been tweaking down VE tables for 3 months trying to lean out the
> > motor and just found that my first setting of 24lb/hr injectors was
> > actually in the eprom as 18lb/hr because of the conversion...)
> >
> >(I was using WinBin, but don't believe it to be the problem...)
> >
> >mike
> >
> >In message <20000613143134.9794.qmail@web121.yahoomail.com>,Squash writes:
> >>I figured it out yesterday... The original idle speed for an
> >aujp is 600, min
> >>e is now set to 800
> >>rpm. I made the mistake of having a chip done by a S&P, and now
> >i'm fixing al
> >>l the stuff they did
> >>wrong (like they didn't change the VE table or idle BLM cell, etc).
> >>
> >>There is a bit in the anht_hac that says something about
> >disabling "CCP" at id
> >>le, is CCP a learn
> >>mode?
> >>
> >>My setup has run 10 out of 16 cells, but i'm sure i can get into
> >the rest if I
> >> try...
> >>
> >>Now my problem is the BPW. I switched the idle cell to 13 (the
> >correct one fo
> >>r 800rpm/50kpa) and
> >>now I can actually tune it. But it appears that I can't take
> >enough fuel out,
> >> so I dropped the
> >>BPW to 5.008 from 6.7 (location 41A). That had the desired
> >effect, (leaning i
> >>t out), albeit a bit
> >>too much. But the commanded AFR now reads 19.9:1. I think maybe
> >I should cha
> >>nge the injector
> >>flow (41C) instead, but i don't quite understand what effect that
> >will have.
> >>I'm scanning the
> >>archive files now.
> >>
> >>Any ideas? I've found the spots in my VE maps that need to have
> >the least fue
> >>l and I need to
> >>bring it all down a notch.
> >>
> >>Thanks,
> >>Squash
> >>
> >>--- rr <RRauscher@nni.com> wrote:
> >>>
> >>> (With the pulling of fuel not affecting your idle, double check that
> >>> you are changing the right area. All it takes is setting up the .ecu
> >>> file incorrectly, been-there, done-that).
> >>>
> >>> As for the blm idle cell=4, it is sometimes difficult to understand why
> >>> gm does things. If I had to guess, it would have to do with drivability.
> >>> Maybe to prevent a drastic change in an area that is then used when
> >>> 'coming' off idle. Maybe to prevent a rough idle from switching between
> >>> two cells. On the '747, certain conditions will prevent an int reset to
> >>> 128 when the cell selection changes. Like whether the O2 is sensing a
> >>> rich condition, or the ecm is in decel enleanment.
> >>>
> >>> How many other cells have you seen in use? Are all sixteen used, or
> >>> just a couple? AZTY 730 v6 bin only uses three cells, idle, cruise and
> >>> a decel cell. That's all I've ever seen used. Other bins use two cells,
> >>> throttle open, and throttle not open.
> >>>
> >>> hth's
> >>>
> >>> BobR.
> >>>
> >>> Squash wrote:
> >>>
> >>> > While doing some tuning this weekend, I decided to work on
> >the idle. It's
> >> been running
> >>> > 51kpa/800rpm with 4/108/100 cell/blm/int. I went into the
> >lower VE table
> >>(aujp) and around
> >>> > 800rpm/51kpa I pulled fuel out, which had no effect on my
> >idle! So I chec
> >>ked around the ANHT
> >>> hac
> >>> > and there is a setting for which cell to use at idle. It was
> >set to 4, an
> >>d I had assumed
> >>> > something else, so I was wrong there. But 4 is *not* where
> >800/51 is loca
> >>ted.
> >>> >
> >>> > Why would I want to use cell 4 for idle?
> >>> >
> >>> > Squash
> >>> >
> >>> > =====
> >>> > Trains, Trucks, and EFI at
> http://www.trailrunners4x4.org/users/realsquash
> >> >
> >> > __________________________________________________
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