[Diy_efi] Speed Density EFI adaptable to V-Twin?

[Terry Kramer]

I'm not intimately familiar with the Delphi system, but have a hard time
believing that any motorcycle (or car) EFI system can match the technology
in the latest BMW Motoronic system.
 
Consider this.
 
Each cylinder has its own O2 sensor.
 
Each cylinder has its own fuel map.
 
Each cylinder has two spark plugs, and each of these two spark plugs have
there own spark map. So at various times, the different plugs in the same
cylinder diverge on spark timing.
 
Each cylinder has its own knock sensor.
 
The injection is sequential.
 
So the ECU actually controls the boxer twin as if it were two single jugs,
working to their maximum efficiencies!
 
This type system would be the way cool on a HD Twin. With the exception of
the differences in timing from a V to a Boxer, I suppose one could do a
transplant. Think about such a system on V-8!

-----Original Message-----
From: diy_efi-bounces at diy-efi.org [mailto:diy_efi-bounces at diy-efi.org] On
Behalf Of Kalmbach, Kevin D
Sent: Wednesday, May 25, 2005 12:12 PM
To: diy_efi at diy-efi.org
Subject: [Diy_efi] Speed Density EFI adaptable to V-Twin?



Just curious, in my attempts to avoid the ridiculous costs affiliated with
parts for bikes from HD.  
Is there a reasonably well hacked, speed density, weatherproof ECU, with O2
sense that I could get from a 'yard and use on a Harley Vtwin?  In reality
this ends up being more mature then the current H-D Delphi units and
certainly more sophisticated than the Weber-Marelli Alpha-n lump that's on
it now.  In the past you have pointed out several decent Alpha-N options
(thanks Marcello), but I'd like to try to go as modern as I can.

Megasquirt and DIY-WB are obvious options but if something can do the spark
timing thing too, that would be perfect 

Thanks in advance 

Semper Celeratis 

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