[Diy_efi] Advice needed! Motronic or mirocontroller?

[Marcus]

Does anyone know whats happened to the old archives then? as im still trying to
work out what to do

Cheers.

Marcus

--- Alexei Pavlov <alexis.pavlov at st.com> wrote:
> Hi Marcus,
> 
> According to Steve the archives are available or will be available soon.
> It would be a nice idea to look at them, your questions are very common.
> 
> At this site
> http://www.netquest.net/~knighton/software.htm
> you'll find a 'ditrial' software that will allow you to find maps
> of the 1.3 and 3.1 Motronic ECUs.
> 
> 
> mhaggers at yahoo.com wrote:
> > 
> > Hello,
> > 
> > I'm new to the world of efi and am currently thinking about turbocharging a
> BMW M70 engine that
> > runs Motronic DME 1.2 or 1.7. I have two ideas to control the new fuel
> requirements. Both include
> > larger injectors,increasing the fuel pressure and fitting a larger flow
> rate hot wire air flow
> > meter. Then i need to modify the injector timing and have thought of two
> ways that this can be
> > done.
> > 
> > Modify the fuel map on the eprom to get the required fueling. (plus i can
> also modify the ignition
> > map) Does anyone have any knowledge or .bin files. How hard will this to a
> newcomer? I have an
> > general engineering degree but have never used eproms before.
> > 
> > or
> > 
> > I can install a microcontroller along with an ADC and DAC, inbetween the
> new hot wire AFM and the
> > ECU. This can then map the the new readings to corrispond with the old
> readings. For example: The
> > new AFM will give a lower voltage reading compared to the old, but this may
> still be to high once
> > the larger injectors and increased fuel pressure have been fitted. The
> microcontroller could then
> > be used to reduce the AFM sensor output (as seen by the ECU) even lower to
> compensate.
> > 
> > Could i please get feedback on these ideas as to if they are workable,
> which idea seems better? I
> > like the idea of modifying the eprom but i am put off by how hard this may
> be.
> > 
> > Cheers,
> > 
> > Marcus
> > 
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