DFI, Batch Fire, and other myths

[thergen at svn.net]

Does your '93 Z28 also have two O2 sensors?  This would make sense with
two separate timers controlling separate drivers.

Tom

On Wed, 20 Jan 1999, Roger Heflin wrote:

> 
> 
> On Wed, 20 Jan 1999, Andrew K. Mattei wrote:
> 
> > ECMnut at aol.com wrote:
> > > 
> > > With the GM stuff, I believe most of the 8 cylinder applications
> > > have injector circiuts A & B, and they alternate..  
> > 
> > I popped open my 165 ECM the other day ('89 TPI 350) to check this out,
> > and though it has a left bank / right bank wiring, the traces are
> > soldered together on the ECM board. So, in the case of the Chevy TPI
> > 8-cylinder motor, they all fire together. :) (IIRC, only has one
> > injector driver inside the ECM too.)
> > 
> 
> Looking in the 93 Z28 programming there appear to be two different
> drivers.  They are using two different timer registers to time the
> injector open time, which would lead me to believe that they are
> handled differently.    
> 
> 				Roger
>