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

["trax" <trax@frederickmd.com>]

Money.  At least everyone seems to know about this.

Tim

>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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