[Diy_efi] Typical boosted ignition timings

[Marc Reviel]

>marc at powerlogix.com wrote:
>>
>>  The distributor was gutted and a simple sensor added for Sync Signal
>>  to the MoTeC. No advance/retard of any kind.  MoTeC also uses the
>>  60-2 factory crank trigger wheel.  Never any issues with the MoTeC
>>  working properly.
>>
>>  I did get some feedback from Todd at ProtoMotive. He did say they had
>>  to retard to 14 degrees @ 1 bar on 91 octane on an engine very
>>  similar to mine to be able to run on street gas.
>>
>>  Experimentally, I was arriving at 12 degrees @ 1.25b and Lambda set
>>  to .85 on 93 octane to get detonation-free on my engine.  That seemed
>>  a little too retarded at first, but considering Todd's experience,
>>  maybe that's just the way it is.
>>
>>  Have you worked much with engines similar to this one?
>
>Personally not. I'm working with a guy who knows well Porsche engines.
>I'm more specialized in EFI :-)
>We've been looking for a possibility to supercharge a 3.3L atmo engine.
>Something like twin-turbo big boost. The idea was to use a Motec
>ECU (the guy knows them well), put RS2 cams, flat pistons to decrease
>CR and possibly some exhaust work to make EGR improve mid-range
>behaviour.
>That could be simpler on Variocam engines.
>The project was aborted but I'm sure we'll do it, may be next year.
>
>Currently we are modifying atmo flat6 engines, we rebuild the
>intake and exhaust and would like to find a good configuration
>that we could install as a power kit (+ our own additional ECU).
>
>Alexei


Good luck with that engine build. Sounds very interesting.

Love to correspond with you/your friend on MoTeC programming.  This 
is my first MoTeC EFI, and there is NO info any where on it (that i 
can find). I am an engineer so I can pick up things fast, but I still 
need lots of questions answered before I can do everything I want. 
(I am alittle nervous about 'experimenting too far' with an expensive 
engine. ;) )

I'll be happy to send you guys my maps, if your interested.


-- 
Marc J. Reviel

Director of Engineering/CTO
PowerLogix
http://www.powerlogix.com

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