Jag V12 ECU Mods

[John Napoli]

On Fri, 3 Oct 1997, Clare Snyder wrote:

> >
> >
> >On Wed, 1 Oct 1997, Clare Snyder wrote:
> >
> >> 
> >> Try a 2.8 V6 system and add an extra six injectors - batch fired - drive the
> >> extra drivers from the current injectors - 3 extra on each side - one driver
> >> for each set of 3 - use same driver as stock unit, or use 2 2.8 systems,
> >> with 2 throttle bodies, two ecus, etc, like a 2X4 system.
> >> >
> >
> >Yes.  This is exactly the train of thought I was having.  How easy to
> >modify?  How hard to create?  What donor cars would you look for?
> >
> >John
> >
> >
> For a single ecu system, I would use two throttle bodies if there is a TPS
> or MAFF, only connect one. Connect the trigger for another set of drivers
> (possibly pirated from a second ECU) to the injector wiring to double the
> fuel output.

The Jag has 1 TPS, no MAF, two throttle bodies (butterfly plates, one for
each bank), and a MAP.

What about 'Sandy's driver', whatever that is, that was mentioned in
another post?  

> 
> The slightly better way would be using two complete V6 systems. You could
> use a speed density system, using only a MAP sensor and TPS, or the
> full-blown air flow sensing version. The speed density system was used on
> many 2.8 litre GM V6 engines - speed density prom was a retrofit on many J?
> SERIES (LIKE THE PONTIAC 6000) to get around a MAFF sensor problem. I would
> go that route to start, MAFF could be added later by changing the calpack.
> 
> 

A more brute force approach.  Can 1 MAP and TPS feed two ECUs?  I would
prefer one ECU if possible.  (Less to buy.)  :)   What years Pontiac 6000s
would make a good donor?  Do I need all the GM sensors, TPS, MAP, harness?
(I guess so, actually.)

Thanks for the reply.

John