749 inna 730

[Bruce Plecan]

-----Original Message-----
From: Walter Sherwin <wsherwin at idirect.com>
To: gmecm at esl.eng.ohio-state.edu <gmecm at esl.eng.ohio-state.edu>
Date: Wednesday, March 31, 1999 6:00 PM
Subject: Re: 749 inna 730

I have run the 749 calibrations in a 730, and run 730 in a 749.
Both were as TBI applications.
In the v-8 applications I used the v-8 memcal out of a AUJP.
Both were driviable in limp home mode.
730 in a 749 loses the TCC, I didn't have time to look for an answer.
The 749 calibration, in 730, was to:
a.  give folks the option to have an editable prom editor, for a resonable
price.
b.  To allow 730 owners who are running S/C a caibration option.
c.  In all I mentioned was staying with the 2 bar.
This was also done before any of the 730/165 tables were "hinted at".
(in reference to the aujm/aujp/arap/anht)...




>>The answer is in the archives,
>>and if you haven't bought a 730 why not just use a 749?.
>>Bruce
>>
>>
>>>I dunno!  Why not?
>>>I'm just scared to try something that nobody has talked about (use a 749
>>>on a v-8 w/o a turbo).
>>>Supposedly there is a cylinder select function, as is shown in the
>>>promgrammer.  But it won't let me change it to and 8!
>>>Andy
>>>--- Ludis Langens <ludis at cruzers.com> wrote:
>>>> andy quaas wrote:
>>>> > p.s. i'm leaning on the MAP 7730 (possibly with a
>>>> 749 EPROM).
>>>> Why not a '749 PROM running in a ... '749?
>>>> Ludis Langens                               ludis
>>>> (at) cruzers (dot) com
>>>> Mac, Fiero, & engine controller goodies:
>>>> http://www.cruzers.com/~ludis/
>
>
>
>
>Never played with a 749, so please excuse me if this is common knowledge to
>the list.   I can comprehend changing the cylinder select, setting the
>1bar/2bar MAP flag, finding and changing the injector constants, and
>reworking the spark/fuel tables to match a V8 application.  This is all
fine
>and dandy as long as the CPU is in control of things.  What
>if..............one day the system drops into "limp home mode" (redundant
>fuel & spark).   Limp home will be terribly screwed up on a V8 will it not?
>Is this feature moded through the MEMCAL, like other boxes?   Can a person
>somehow either   1) calibrate the backup fuel/spark/reference pulse
>functions to suit, or     2) defeat the entire feature so that it NEVER
>kicks in (ie: no backup to the CPU)?   Option #2 sounds most attractive.
>Has anyone fiddled with this?
>
>
>Walt.
>