Dual TBI units

[Shannen Durphey]

There's physical limitations here, methinks.  The offy trip manifold
I've got for sbc is too compact to allow tb's to be mounted on it.

then can you imagine trying to convince ecm 2 that map and rpm
increasing at what it thinks is idle doesn't mean the vehicle's not in
deceleration.  Or trying to map fuel for ecm 1 to lean out during
sudden map decrease because 4 more injectors have come online.  Too
much for my weekends.

Shannen

David Cooley wrote:
> 
> Here's an Idea for the fanglers...
> A tri-power manifold.
> 3 TBI units, center is the main and the 2 outer ones are staged (same rate
> to both outer ones).
> Injectors sized accordingly small since there are 6.
> 1 ECM running main TBI unit, spark etc.  2nd ECM strictly for fuel control
> of the outer 2 TBI units,  TPS feedback off the outer unit with it's own
> TPS sensor.
> Anything is possible, but is this a viable project?  With the info that is
> known about the older TBI ECM's, the code hacks (for those code hackers!)
> should be pretty do-able.
> 
> At 11:09 AM 12/16/1999 -0500, you wrote:
> >You can't use progressive linkage with TBI.  The computer will not know the
> >air flow distribution between throttle bodies.  Just link all 2 or 3
> >together.
> 
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