Re: P&H Injector Interface

["nacelp" <nacelp@bright.net>]

> >There is a difference between TBI, and P+H mode, jus to
> >make sure we're on the same wave lenght.
> Ah yup, I was unaware there was one ECM that already could drive TPI
> P&Hs, as you indicate below, soooo I thot the only time an ECM was
> driving a P&H injector was when it was driving a TBI.
> >The 749 can operate two *TPI* sets of P+H injectors (4cyl), on 2 wires.
> Just wanna make sure I've got this; this is a 4cyl ECM, so that would be
> 2 P&H injectors on each wire, right?

Yepper...

> >The 730-165s when put into P+H mode, are for only one TBI Injector on 1
> >wire.
> Right, gotcha.
> >The TBI ecms can be for single or dual injectors.  The dual type like the
> >747 has 2 (P+H) drivers, and one injector per per wire.
> OK, I *think* I've got it now. Wasn't aware of the setup on the 749;
> musta dropped that somewheres along the trail (littered with my dead
> neurons, BTW).
> I know this has been tedious for many, but it's beginning to clear at
> least in my noggin, and all makes good sense. Thanks to all for
> assisting the mentally challenged. Basically, they drive no more than
> the equivalent of 2 P&H (2.4 ohm) injectors per pin/wire, which is about
> the same load as 1 TBI (1.2 ohm). Just to round out the taxonomy,  when
> batch-firing SATs, they're split into pairs of 4-per-wire if 8-cyl and
> 3-per-wire if 6-cyl. Sound right?

Ya got that right
Grumpy

> Gar


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