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

[Eric Aos <EOA@spartek.com>]

How does it work with Promedit? If someone will help walk thru this, I'll
take a look at the code, and see what WinBin's doing.

Eric


> 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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