<VV> Re: MegaSquirt and other fuel injection systems

[Sethracer at aol.com]

In a message dated 3/26/2007 11:01:17 A.M. Pacific Standard Time, FrankCB  
writes:

 The alternate to an "open" system like MegaSquirt is using a  "closed" 
system from a similar displacement engine (say a 2.8 liter Chevy  V6), but then you 
have NO access to the software and you'll still have to  install the stock 
NARROWband O2 sensor that came on the car originally.   Plus you're stuck with 
however many separate injectors or throttle body  injectors that came on that 
particular engine.
    If you do go the MegaSquirt route, you'll need to  have good experience 
installing small electronic components on small PCB  boards and being able to 
correctly solder them into position with a very  small-tipped soldering iron 
(temp controlled) using an illuminated magnifying  lamp. If you're not 
experienced and confident in doing all this you  can now buy an already built 
MegaSquirt unit at higher cost.
    You can also build your own wideband unit.   Do a Google search on 
"oz-diy-wb" to find sources for these kits or to buy one  already constructed.
    Good luck,
    Frank Burkhard



Frank - There are a dozen other alternatives to the two you mention.  
MegaSquirt is the "Open source" system. And the factory OEMs are the totally  closed 
systems. (You can kind of fudge them, but change capability is not  really 
designed in) Or you can buy a commercially available apply-it-yourself  system 
designed for change. SDS is one brand - Simple Digital Systems from  Canada. But 
Accel DFI, MSD has one, Electromotive, and several more. Those  are all 
designed to be adapted to a motor. You need the operating parameters and  attached 
sensors - including, usually, a special one for our air-cooled motors.  But 
then you will spend either the time that Kent alluded to, or the money  with one 
of the specialists that have popped up to service the folks installing  the 
systems. I know Electromotive has a group of folks who can do the  final tune 
on the motors. The whole adaptation is not for the faint of heart or  faint of 
pocketbook, but it seems like the results can work out well. -  Seth  



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