How to determine which mask?

The ecm is a 1227165 with aftermarket burned chip.....how do you determine which mask to use to read and write the 27SF512 (32B.xdf or 6E.xdf)

Thanks

my easiest way is to install TunerCats and just try to open bin file, program will tell You which mask is needed and You can switch to TunerPro.

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Originally Posted by WASyL

my easiest way is to install TunerCats and just try to open bin file, program will tell You which mask is needed and You can switch to TunerPro.

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Thanks...don't have TunerCats

I believe that Bithoist will give you the mask ID. Upload the file and Bithoist will check to see if its stock.

http://www.gearhead-efi.com/bithoist/query.php

For $OE $OD $E6 etc., the mask ID is in the .bin and can be seen with either XDF, not sure if same for your ECM, but might be worth try.

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Originally Posted by EDZIP

Thanks...don't have TunerCats

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Can you send me bin to cwbiuro @ gmail. com and I'll check it for you

Thanks guys..sorry for the slow response...have company. WASyl..bin enroute

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Originally Posted by 1project2many

I believe that Bithoist will give you the mask ID. Upload the file and Bithoist will check to see if its stock.

http://www.gearhead-efi.com/bithoist/query.php

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Not identified....anyone else have an idea which mask to use?

A stock AUJM is 16.0 KB this one is 64.0 KB

Gearhead-efi link for 1989 TPI Information: http://gearhead-efi.com/Fuel-Injecti...Information-6E

The link includes:

File Type: xdf $6E.xdf (101.1 KB, 866 views)
File Type: ads 1227165_6E.ads (58.8 KB, 392 views)
File Type: adx 1227165_6E.adx (48.4 KB, 692 views)
File Type: adx $6E-1227265-V1.2.adx (48.6 KB, 535 views)
File Type: adx $6E-1227265-V1.adx (48.6 KB, 331 views)

AUJM 89 F-car 5.7TPI auto with 3.27.BIN (16.0 KB, 301 views)

dave w

Thanks Dave...an original AUJM is 16.0 KB, the attached bin is 64.0 KB (labeled wrong?) Not sure which mask to use with that attached bin, $6E, 32 or $32B in the 1227165.

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Originally Posted by EDZIP

Not identified....anyone else have an idea which mask to use?

A stock AUJM is 16.0 KB this one is 64.0 KB

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If you look at the BIN in a hex editor, you will see that the first 48 kb are all blank. Only the last 16kb actually have data. This appears to be a BIN that was taken from an aftermarket chip that is larger than the OEM chip, and rather than using BIN stacking (which would repeat the data), they just filled the first 48kb with FF.

After removing the junk data at the head, I loaded the BIN up with the $6E XDF and ran a comparison against the stock AUJM BIN. Here's the results:

Attachment 17010

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Originally Posted by EDZIP

Thanks Dave...an original AUJM is 16.0 KB, the attached bin is 64.0 KB (labeled wrong?) Not sure which mask to use with that attached bin, $6E, 32 or $32B in the 1227165.

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your bin is 64k not 16 cause it is stacked due to bigger chip used. factory '165 ECM uses EPROM 27c128 and that gives 16k memory, your one is EEPROM (flash) 27SF512 with total memory of 64k. memory must be writen blank or with some sort of data. most people use bin stacker via unerpro just to stack files with proper data and fill chip memory so that ECM won't start throwing codes and go limp mode.

Thanks all...you guys are great.....finally making sense.

i have sent you splited file t ork with, after making changes you need to stack it before burning it.

best regards