[Diy_efi] Newbie ?

[Eric Byrd]

I found out some more info.  An engine needs 5.7 cc/min of fuel per hp. 
The stock 240 cc/min injectors on the Honda D-series engines therefore
can support up to 168 hp, at the maximum duty cycle.  However, the SDS
site recommends only an 85% use of the maximum duty cycle, so that
becomes about 145 hp.

On Wed, 11 Dec 2002 02:40:20 -0500 Eric Byrd <klox at juno.com> writes:
> Definitely not, at least not in the case of Hondas.  They try to 
> strike a
> balance, between small enough to ensure a smooth idle, and large 
> enough
> that the sequential signals to the injectors aren't in danger of
> overlapping.  My guess is, that would complicate the response of the
> injector solenoids.  It makes sense to have only one injector 
> spraying at
> a time.  And I would also guess that Honda stock injectors can 
> handle
> about 50% more horsepower than the stock power peak.  The guys at 
> Zdyne,
> the place in California that makes programmable ECU's for Hondas, 
> say you
> can use the stock injectors with their equipment, if you boost the
> regulator pressure a little and remap the fuel.  But they also say 
> it's a
> little dicey, doing that, and they recommend you get 450 cc 
> injectors
> instead of the stock 240's on the Honda D-series engines.
> 
> On Tue, 10 Dec 2002 21:33:01 -0800 (PST) bob limo 
> <fatbillybob at yahoo.com>
> writes:
> > Do you guys know if the wide open throttle on most
> > production sports cars is at the maximum duty cycle of
> > the injectors, or do most manufacturers have some head
> > room in the injectors like 20% more room?
> > 
> > TIA
> > 
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