[Gmecm] re dual4cyldis modulefor v8 use

[Ford, Pat]

 bmw v12s as well!
Pat

-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On
Behalf Of Gary Evans
Sent: Monday, October 02, 2006 11:24 PM
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] re dual4cyldis modulefor v8 use

Ferrari. Wow. I did not know that. The dual ECUs do have some
advantages:

- Separate O2 feedback loop for each bank.
- One ecu can completely fail and you can still drive.
- Ability to do interesting things like partial DFCO and soft(er) rev
limiter.

However, I would still love to see someone do a working single ECU
setup, if only as an exercise in pushing what can be done with a GM ECM.

-Gary



On Oct 2, 2006, at 4:37 PM, Bill Shaw wrote:

> Dual ECUs has been standard in Ferraris since the beginning of time.  
> OK,  maybe not the beginning of time,  but at least since they started

> using ECUs :-)
>
> Before that they used dual distributors each with dual points.   
> Nothing wrong with dual.
> I thought your dual '730 setup was kind of slick :-)
>
> Bill
>
>
> Gary Evans wrote:
>> Hm. Interesting. Let us know if you get it working. I am currently 
>> using a dual '730 ecu setup on my V12. It works great, but having
>> 2 ecus is an inelegant solution.
>>
>>
>> On Oct 2, 2006, at 4:02 PM, Peter Jenkins wrote:
>>
>>> have been trying with 1227808 using 2 6cyl dis coils for v12
>>> the only option was as previously mentioned ,run two ecu's
>>> reason is  you double the rpm which you can work around but  
>>> limits max rpm to half previous ie 3000rpm
>>> what I had in mind is a type of  x2 flip flop circuit on the est  
>>> output double out put pulses and send them along alternating  
>>> outputs but still run the second sensor to time the second dis  
>>> pack in start up/limp mode
>>> Have got a set up on a test bench that works in limp mode fine  
>>> but can't get the x2 flip flop circuit to work as that is not my  
>>> line of expertise
>>>> Peter Jenkins
>>>> 10336 Murray River Rd
>>> Pine Mountain Vic. 3709
>>>> Australia.
>>>
>>>
>>
>
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