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RE: lb/hr calculation in ERROR (TunerCat vs. WinBin)



Since I put out the original, I will modify it and post it again.


On 14 Jun 2000, at 16:51, trax wrote:

> Can someone here modify the .ECU file and then post it on diy-efi at
> 7730v4.ecu?????
> 
> Also,
> What about the other parameters that I noted that were different? ...
> 
> Fan Temps are completely different.
> RPM fuel cut and return are different
> Cold, Warm, and Hot closed loop timers are different
> 
> tim
> 
> 
> >-----Original Message-----
> >From: owner-gmecm@diy-efi.org [mailto:owner-gmecm@diy-efi.org]On Behalf
> >Of rrauscher@nni.com
> >Sent: Wednesday, June 14, 2000 1:23 PM
> >To: gmecm@diy-efi.org
> >Subject: Re: lb/hr calculation in ERROR (TunerCat vs. WinBin)
> >
> >
> >
> >What I do is to invert the constant before inserting it
> >into the .ecu file. Then when multiplied by the val, it
> >is the same as a divide.
> >
> >BobR.
> >
> >>
> >>
> >>Yes, the 7730v3.ecu is in error which is what prompted my orig. posting
> >>on how to fix the .ecu file format in general where the conversion eqn
> >>involves the inverse. (1/x).  The 7730v3.ecu file is correct for the
> >>stock 22lb inj size, but works in reverse as you move away from the stock
> >>value.. (Same thing in the 7730v3.ecu for the Stoich value of 14.7 !)
> >>
> >>So again, does anyone familiar with the .ecu format know of a way to
> >>include a 1/x conversion, or is it a protocol error?  (for now I just
> >>have my .ecu file displaying the inverse of things when needed.. (sec/gm,
> >>etc.)
> >>
> >>mike
> >>
> >>
> >>In message
> ><NEBBIGHBJLLMAFPICMOHAEFMCCAA.trax@frederickmd.com>,trax writes:
> >
> >>>Guys,
> >>>
> >>>There HAS to be a discrepency between using WinBin with the
> >7730v3.ecu file
> >
> >>>and using TunerCats.
> >>>
> >>>I have a .bin that I created in TunerCats to have an injector
> >flow rate of
> >
> >>>24.1lb/hr.  Using WinBin with the 7730v3.ecu file available at
> >>>ftp://ftp.diy-efi.org/incoming/ shows an injector flow rate of 2.56
> >>>grams/sec. which equates to 20.3lb/hr.
> >>>
> >>>So, I loaded the stock AUJP .bin into WinBin along with the
> >7730v3.ecu file.
> >
> >>>It reports 2.79 grams/sec which equates to 22.1lb/hr (which is correct).
> >>>WinBin with the stock AUJP .bin and the 7730v3.ecu file has the correct
> >>>values.  But, modified injector flow rates appear to be wrong.
> >This is an
> >
> >>>important issue which should be addressed ASAP for those of you
> >guys who are
> >
> >>>using WinBin.  I am using TunerCat and everything appears to
> >work great with
> >
> >>>TunerCat.
> >>>
> >>>FYI - I tried these calculations in the REVERSE order too.  I loaded a
> >>>standard copy of the AUJP .bin file into WinBin with the 7730v3.ecu file.
> > I
> >>>changed the stock injector flow rate from 2.79 grams/sec (01CC) to 3.03
> >>>grams/sec (01F4) in order to produce a new injector flow rate of
> >24.1lb/hr.
> >
> >>>I saved the .bin and loaded it into TunerCat.  TunerCat now
> >shows 20.3lb/hr
> >
> >>>for the injector flow rate.
> >>>
> >>>Somebody is obviously wrong here.  My bet is either WinBin or
> >the .ecu file.
> >
> >>>
> >>>Tim
> >>>
> >>>
> >>>>-----Original Message-----
> >>>>From: owner-gmecm@diy-efi.org [mailto:owner-gmecm@diy-efi.org]On Behalf
> >>>>Of rr
> >>>>Sent: Tuesday, June 13, 2000 8:11 PM
> >>>>To: gmecm@diy-efi.org
> >>>>Subject: Re: lb/hr calculation
> >>>>
> >>>>
> >>>>
> >>>>Wow, I'm having trouble following you guys. However, I think I see the
> >>>>discrepancy. Tim, your equation below is a correct conversion from
> >>>>gms/sec to lbs/hr.
> >>>>
> >>>>Looking at the anht hac, location 41c is in sec/gms, not gms/sec. This
> >>>>appears to be the sticking point. That hac has 460 in that location
> >>>>for 22# injectors.     ARG = ((SEC/GRAM * 256) * 5). The bigger
> >>>>the injector, the smaller the number.
> >>>>
> >>>>BobR.
> >>>>
> >>>>
> >>>>trax wrote:
> >>>>
> >>>>> Could someone here please post why my calculation is wrong
> >(or if it is
> >
> >>>>> correct).  I just want to make sure that my new .bin will have the
> >>>>> appropriate setting:
> >>>>>
> >>>>> 2.56g/s * 1lb/454g * 3600sec/Hr = 20.299559lb/hr
> >>>>>
> >>>>> Tim
> >>>>>
> >>>>> >The calc I posted matches the aujp bin, so I accept it to work.
> >>>>> >It also matches the 38# setting
> >>>>> >in the new "custom" chip I just wasted money on.
> >>>>> >
> >>>>> >I'm not a math wiz, so I can't twist it around like yours, but i'm
> >>>>> >pretty sure yours is incorrect.
> >>>>> >
> >>>>> >Squash
> >>>>> >p.s. I seem to recall that this calc is the same for the 7747, and
> >>>>> >that is where I got it.  It
> >>>>> >seems to jive in my head?
> >>>>> >
> >>>>> >--- trax <trax@frederickmd.com> wrote:
> >>>>> >> Calculations:
> >>>>> >>
> >>>>> >> 2.56g/s * 1lb/454g * 3600sec/Hr = 20.299559
> >>>>> >>
> >>>>> >> Am I missing something?
> >>>>> >>
> >>>>> >> >1/(#hr/3600*453.59237)*1280  --  use this to get your value.  261
> >>>>> >> >(dec) = 38 #/hr according to
> >>>>> >> >this, and 462 = 22#, 423 = 24#
> >>>>> >>
> >>>>> >> Tim
> >>>>> >>
> >>>>> >-------------------------------------------------------------------
> >>>>>
> >>>>
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> >>>>
> >>>>
> >>>
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