730 Pump Shot

[Squash]

How does say a 93 f-body handle this?  Someone was working on 1993 code, which was also MAP.

Squash

--- timsiford at hushmail.com wrote:
> >How much does the FP change?  5 psi? 
> 
> Apples to oranges ... depends on how much vacuum your current setup pulls 
> at idle.  Example - swapping the 218/224 cam into my car caused the vacuum 
> to change to 50-55kpa at idle.  Thus, the vacuum difference between WOT 
> and idle is now much smaller as compared to the stock setup.  Mine changes 
> about 4psi from an idle to WOT and about 7psi from an off idle cruise to 
> WOT (because I am pulling more vacuum cruising at particular rpms.
>   
> > I don't know as if that is enough to make
> >much difference in AE, especially when this table seems to counteract 
> >it.  It's almost like the
> >table *removes* AE that is naturally there from the FP change.
> 
> 5psi fuel pressure can change the AE significantly.
> 
> Tim
> 
> 
> >--- timsiford at hushmail.com wrote:
> >> >Obviously, more fuel pressure causes more fuel to be sprayed by the
> >> >injectors. Maybe that's why the pump shot table has decreasing values
> >> >as the %TPS increases.
> >>
> >> Nick,
> >> Great hypothesis!  Finally, ... a proposed reason that explains the 
> >730
> >> pump shot table.  Does anyone else have any comments on this hypothesis?
> >>  Seems very plausible to me.
> >>
> >> Tim
> >
> >
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=====
Trains, Trucks, and EFI at http://www.trailrunners4x4.org/users/realsquash

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