dual GM TBIs

[Shannen Durphey]

Two throttle bodies, one injector per TB.  Total=2 injectors.

Shannen

Walter Sherwin wrote:
> 
> Greg,  your comment on injector drivers sparked a thought.  What do you and
> Bruce use to drive your two sets of TBI injectors?  I assume that you have
> two sets of two low impedance Rochester TBI injectors (ie:  two Rochester
> 220 TBI units)?  Or, do you have a total of two injectors (ie: two Rochester
> 700 TBI units)?   If you do have four injectors then are they in two
> "series" groups or two "parallel" groups?   Just curious.  Thanks.
> 
> -----Original Message-----
> From: Gregory A. Parmer <gparmer at acesag.auburn.edu>
> To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
> Date: Friday, October 16, 1998 9:02 AM
> Subject: RE: dual GM TBIs
> 
> >
> >On Thu, 15 Oct 1998 Don.F.Broadus at ucm.com wrote:
> >> The article I saw had dual TBIs on a dual quad manifold with one IAC on
> the
> >> front TBI. My thoughts were to tap off of
> >> The front injectors with a driver to pulse the rear TBI. The front TPS
> would
> >> handle both TBIs and the ECM wouldn't be any the wiser. The  throttle
> >> linkage would open both TBIs the same amount and not progressive like
> dual
> >> quads.
> >>
> >> Should work ?
> >
> >That's essentially the same setup as the Crossfire that
> >Bruce Plecan and myself have running. Parallel wired
> >IACs and non-progressive linkage..fired by a '7747.
> >You're gonna need custom drivers if you intend to
> >run more than 2 low impedance injectors, but that's
> >not necessary anyhooo.
> >
> >-greg
> >