Megasquirt GP queries...

[Andrew Theurer]

Bernard,

Most of the megasquirt discussions are at efi332 email list at the moment.  
The active members there could probably help you.

On Friday 09 November 2001 04:19 pm, you wrote:
> I would like to eventually convert my turbocharged Audi to megasquirt, away
> from CIS.  However, before I do that, I'll likely convert a NA lawnmower
> engine, or something equally pedantic, to megasquirt just to work through
> the issues.  I have a bit of a leaning curve to get past.
>
> I would like two megasquirts, so I have a spare.  Should I get one with the
> NA MAP and the other with the 2.0 bar MAP, or can I get away with the 2.0
> bar MAP on a test NA application?

I'm pretty sure the MAP it comes with will work just fine on a non-turbo 
application.  Lawnmover?  Is it 2 stroke?  I'm not sure about this honestly.

> How difficult is it to change the MAP?

I think the MAP is on the circuit booard itself.  I think this came up 
earlier, and the option was to set a jumper and wire an external MAP.  
Beware, this is from memory, and I have not been following Megasquirt that 
closely.  

>
> Can arrangements be made to purchase more MAP setups than boards on the GP?
>
> Also, I am currently running at 15+ psi of boost on my Audi.  Is the 2.0
> bar absolute, or above atmospheric?  I thought I saw some discussion on a
> 3.0 bar sensor, but I never saw clearly if this was a viable alternate
> option. I would be interested in a setup that can deal with >15 psi boost.

I _think_ it's really 2.5 bar absolute, but please check the efi332 archives 
to make sure.  I remeber a comment about 1 pascal ~= 1 bit on the 8bit ADC.

-Andrew

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