2 GM TBI units, one ECM

[Gregory A. Parmer]

On Mon, 7 Dec 1998, andy quaas wrote:
> Excuse the ingnorance, but what is a cross-fire system, exactly?  Did
> this come with a 747?  How are your injectors wired?  Parallel?  My
> only big question is whether a 747 will be ok with 4 injectors!

Got web access?  There are pics under "Installing the Crossfire
Manifold" at http://www.acesag.auburn.edu/~gparmer/efi
Given the pic=1000words thing, this'll save bunches o' typing.

It did not come with the '7747. (Something even slower
I think?) The 2 inj are individually wired and fired alternately 
(every other timing pulse) just like a standard TBI with 2 inj.
If you just wanted the cool looks like a twin 4bbl you could leave
2 of the inj unwired.  With 90lb injectors available, flow won't 
be a problem until you start making pretty big HP.

-greg