Fuel injector Constant

[Bruce Wilcox (EUS)]

Thanks Mike,

Do you know if the standard pressure is a variable in the EPROM??

Best Regards,

Bruce Wilcox

> -----Original Message-----
> From:	Mike Rolica [SMTP:mrolica at meridian-mag.com]
> Sent:	Thursday, September 09, 1999 9:02 AM
> To:	'gmecm at efi332.eng.ohio-state.edu'
> Subject:	RE: Fuel injector Constant
> 
> >That figure is for a set standard pressure.  the actual output of the
> >injector would depend on what the fuel pressure reg is set at at the
> >factory.  Don't quote me on this but I think the standard is 35psi,
> whereas
> >tpi in 87 is set at 39psi.  I'm running 24lbs/hr injectors on my 355TPI
> >@52psi and I have no problems with rich idle with the OEM chip.  When you
> >run at a higher fuel pressure, the fuel atomizes better  it's more
> "misty"
> >and performance is better.  do you have an adjustable fuel pressure reg.?
> I
> >made mine, works good!
> 
> > -----Original Message-----
> > From:	Bruce Wilcox (EUS) [SMTP:EUSBEW at am1.ericsson.se]
> > Sent:	Thursday, September 09, 1999 8:20 AM
> > To:	'gmecm at efi332.eng.ohio-state.edu'
> > Subject:	Fuel injector Constant
> > 
> > Hi Guys,
> > 
> > I looked at the fuel injector constants for various displacement 1987
> TPI
> > engines(1227165 ECU). The results are very interesting.
> > 
> > To my knowledge, the 87 350 injector should be 22 Lbs/Hr and the 87 305
> > injector should be 19 Lbs/Hr. Could someone verify these numbers???
> > 
> > The 350 injector constant stored in the EPROM translated to 23.09 Lbs/Hr
> > and
> > the 305 injector constant translates to 20.86 Lbs/Hr. Does anyone have
> an
> > idea why the discrepancy exists??
> > 
> > Thanks and Best Regards,
> > 
> > Bruce Wilcox
> >