Two TBI units, one ECM

[Tom Sharpe]

What does the twin TBI 84 Vette/Camaro use???  (someone here knows) Would that
work with two 454 TBIs??  Tom

Walter Sherwin wrote:

> Ummmm..............the "749"  houses two 4/1 Amp peak&hold injector current
> drivers, which were originally intended to drive two individual parallel
> sets of 2/.5 Amp peak&hold Rochester port injectors.  This particular box
> was expected to drive the the two pairs of injectors in either SSSF or SSDF
> port fuel mode.  Both electrically, and programatically, this is entirely
> different than what is required for dual channel TBI control, especially if
> you want to run "twin" TBI's.
>
> For "twin" TBI's, your best bet is to procure a TBI box, and add an external
> 2-input to 4-output 4/1 Amp peak&hold injector driver box.  All of the other
> electrical and programatic options are serious compromises, no matter the
> cost savings.  Remember, each TBI injector expects to see 4/1 Amps for
> proper operation and control.
>
> Walt.