VR V6 Memcal Bin Grabbed - How to read

EPROM EEPROM SRAM NVRAM Flash chips, reading/writing hardware and software
Pete30nz
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1996 VS v6 executive
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by Pete30nz »

Hi

It sounds interesting. Are VE tables fuel/air ratio?
kojab
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by kojab »

just curious to see how much difference between your VR Bin Vs CAKF and BLCB factory standard bins

First off I had to remove all the memory byte garbage in your VR Bin and also import the missing blocks.

So using your corrected Bin (MYVR-FIX.BIN) and comparing bytes I have two text flles showing the difference in size between standard CAKF and BLCB bins

BLCBMYVR.BIN Difference in txt bytes is 585,053 bytes

CAKFMYVR.BIN Difference in txt bytes is 34,268 bytes


Turns out that CAKF is much closer and probably what your bin is modified from.



Attached is your fixed MyVR Bin MYVR-FIX.BIN

BLCBMYVR.CMP TXT File

CAKFMYVR.CMP TXT File

MYVR-FIX.BIN
(64 KiB) Downloaded 149 times
BLCBMYVR.TXT
(571.34 KiB) Downloaded 150 times
CAKFMYVR.TXT
(33.46 KiB) Downloaded 155 times
Pete30nz
Posts: 246
Joined: Mon Aug 19, 2019 12:32 pm
cars: 1994 VR v6 berlina
1996 VS v6 executive
Location: Christchurch, NZ

Re: VR V6 Memcal Bin Grabbed - How to read

Post by Pete30nz »

Evening

Thanks Kojab for the fixed Bin file.
When you say fixed Bin, is that back to the state it was before I downloaded it with the aldl function?
What was the memory byte garbage?

Cheers
Pete
Charlescrown
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by Charlescrown »

The VE (volumetric efficiency) is a percentage that represents the amount of air entering the engine. If you increase the number in the table more fuel will be delivered. It's all used for a calculation for how much fuel to be delivered. You can't go over 100%. If you do get to that point in the tune there are other parameters that will allow you to rescale the VE map.
Pete30nz
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cars: 1994 VR v6 berlina
1996 VS v6 executive
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by Pete30nz »

I've got a bit to learn by the sounds of it. Have you done a few tunes, and did it take you a while to get the hang of it?

Can a tune be written to the eprom while it's in the ecm, via the aldl and flash tool?

Cheers
Pete
kojab
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by kojab »

Pete30nz wrote:Evening

Thanks Kojab for the fixed Bin file.
When you say fixed Bin, is that back to the state it was before I downloaded it with the aldl function?
What was the memory byte garbage?

Cheers
Pete
Yes the fixed Bin is exactly the same as before you downloaded it.

When you downloaded it using the ALDL format it reads memory locations which are sitting/located in the PCM that is attached during the read process.

If you used an Eprom reader directly with the memory/eprom chip you would get the same result as MYVR-FIX.BIN
Charlescrown
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by Charlescrown »

Kojab got me started about 10 years ago and I still haven't got it perfected. Always seems to be just that little bit extra you can do.
Pete30nz
Posts: 246
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cars: 1994 VR v6 berlina
1996 VS v6 executive
Location: Christchurch, NZ

Re: VR V6 Memcal Bin Grabbed - How to read

Post by Pete30nz »

I am interested to do a tune or burn a tune.
I like new shift points, and to have more down low torque if possible.

Maybe it's worth getting an eprom reader/writer?
I get lost with the location of these, where are they again?

Cheers
Pete
Charlescrown
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Joined: Sat Aug 06, 2011 7:58 am
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Starion TBI with Delco
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by Charlescrown »

That's what I use for the ECU's with a memcal. I use a GQ-4X which has been superseded by the GQ-4X4. There was an Australian eBay seller darkwire that was selling them at a good price. Others might be able to make good recommendations You will need one to write your bin file to the flash chip (or eprom if you want to but you will also need a UV eraser).
Dylan
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Re: VR V6 Memcal Bin Grabbed - How to read

Post by Dylan »

I've always purchased directly firm dark wires website. Great prices and speedy delivery
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