Speed limiter & new pennies

Programmer nwester at eidnet.org
Thu Nov 18 15:15:11 GMT 1999


Actually--better idea. Can you post the code in any *.bin for me for a 7747
ECM ?? It'd make more sense if I can see it in hex. Thanks buddy !!

Lyndon.
-----Original Message-----
From: rr <RRauscher at nni.com>
To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
Date: November 17, 1999 6:53 PM
Subject: Re: Speed limiter & new pennies


>
>Snuck it into an EGR table<g>. Right after the ker-BLAM (ouch,
>was that a tire?), was the actual code listing. Here is a section of it:
>
>First col is the ecm eprom address, in hex (sub D000 for eprom address)
>
>Next 1 to 2-3(?) cols are the assembled instructions (*put these into
>the eprom at the address in the first col*).
>
>Next column is the line number of the listing (37 to 43 here).
>
>Then come the instructions and expressions.
>
>Followed by comments (after the ';').
>
>      D35A                      37 START:
>   D35A C6 4B                38  LDAB #75  ; cut-out mph
>   D35C 96 04                39  LDAA *$$04  ; status
>   D35E 85 40                40  BITA #$$40  ; 1 == fuel on in effect
>   D360 26 02                41  BNE RICH0  ; bra if rich, fuel on
>   D362 C6 4A                42  LDAB #74  ; mph for fuel back on
>   D364                      43 RICH0:
>
>BobR.
>
>Programmer wrote:
>
>> Bob,
>>
>> How'd this work out & where'd you slip in the code ?? I'm extremely
>> interested...I've got a few customers that over abuse their 3/4 ton
trucks
>> and think they've got racing units--and keep blowing up tires. Typically,
>> they run overloaded and too fast...I've never found any other way to slow
>> down the 7747, other than installing an exhaust restriction.
>>
>>  Lyndon.
>> -----Original Message-----
>> From: rr <RRauscher at nni.com>
>> To: gmecm at efi332.eng.ohio-state.edu <gmecm at efi332.eng.ohio-state.edu>
>> Date: November 16, 1999 6:51 PM
>> Subject: Speed limiter & new pennies
>>
>> >
>> >I have on good word that the speed limiter for the '747 ecm
>> >works. I'll drop the assembled listing in following this text.
>> >
>> >Some formatting may get lost, as word wrap is going
>> >to take over, also try to use a fixed font.
>> >
>> >BobR.
>> >
>> >ker-BLAM<
>




More information about the Gmecm mailing list