DFI, Batch Fire, and other myths

[Shannen Durphey]

diy_efi at efi332.eng.ohio-state.edu wrote:
> 
> In my '93 4.3L CPI PCM, there are also two drivers,
> each handled with two separate output compare timers.
> But, in the case of this calibration, they are fired
> identically.
> 
> One driver fires the CPI injector and the other is
> unused.  I am replacing the CPI injector with 6
> saturated type injectors.
> 
> I've thought of using one driver to fire 3 injectors
> 180 degrees out of phase from the other 3 injectors to
> lessen the shock on the fuel rail. Would it even matter??
> Is this what they call "bank to bank" injection??
> 
> Thanks,
> -Mike
> 

Double batch fire.  Used in 1987 Olds Cutlass Supreme w/ 2.8l, for
example.
Shannen

> -----Original Message-----
> 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