7427 ECM!!!!

[CSH-HQ]

I'm sure it's a 27c512
Bruce

>I am working on modifying a 16197427 ECM for a 4.3L chevrolet.
>
>What is the type of Eprom? (i am thinking it is a 27c256 but can't find any 
numbers on the chip)
>Is there a ECU file available for this? (looked in the FTP site but didn't 
see one for this ECM)
>Or maybe is there a better programmer for modifiing the data in the chip?
>
>
>---
>Jeffrey Scott  
>JWS6367 at mailcity.com
>ICQ #25436277
>nwstp.syty.org
>http://www.geocities.com/baja/dunes/9423
>
>
>
>
>
>
>On Wed, 28 Jul 1999 16:36:55   Marek Skrzypiec wrote:
>>
>>-----Wiadomof oryginalna-----
>>Od: Brent Obermiller <ober_b at sssnet.com>
>>Do: gm <gmecm at efi332.eng.ohio-state.edu>
>>Data: 28 lipca 1999 12:08
>>Temat: 350 roadmaster ecm / 7747 ecm
>>
>>
>>
>>>
>>>Also, does anyone whether the lm3914 bar graph circuit can be hooked in
>>>parallel to the existing o2 sensor or do I need a second one near-by?
>>>
>>>
>>
>>You don't need any , just hook in parallel with additional
>>parallel resistor 1MOhm.
>>
>>Marek
>>elemark at friko4.onet.pl
>>
>>
>>
>>
>>
>
>
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