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