dual GM TBIs

[Walter Sherwin]

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
>