Timed mechanical fuel injection

[Lawrence S. Harris III]

> Not all of this discussion is DIY, but sometimes it is easier to get to the
> races by just doing it like "they" do, instead of totally re-inventing the
> wheel. Personally, I don't have enough "real" engineering training or
> electronics, or C-programming education to really do a true DYI_EFI, but I
> have built several systems around existing programmable controllers while
> building my own hardware (manifolds, air-doors, fuel supply, etc.). Still
> very rewarding and a must for engines that would otherwise have to use a
> carb(s), meaning that no EFI system is currently being produced... example,
> Chrysler Hemi. Even a shitty EFI beats a Holley(s).

I'd say you are mostly correct.  I've come to hate carbs and the people 
who claim that they are easier to work on.  That's a load of bull, and 
oem systems are wonderful in the way the car debuggs itself with 
diagnostics.  I'm currently helping a friend get a carb (with support 
electronics which happen to have a rather archaic design) vehicle running 
properly again, and its a royal pain.  Of cource 90% of the automotive 
enthusiats are a bunch of yahoos anyway, which I find a shame.

I would do one thing different to your description, though.  I would 
write (or rather am writing) my DIYEFI in assembly language.  If an 
individual is going to get intimate with hardware, they should not be 
afraid of embracing it more closely.  I on the otherhand, wish I had your 
mechanical abilities for fabrication of support hardware.

Keep up the EFI retrofits...
Larry