scatuli

well i got your attention, i have a afc and i have lucas 440 cc injectors
my 1000 lo throttle is at -50 and i am still to rich at idle
and at about 5800 rpms when i let off i get a check engine light
any tips?
thanks


Modified by scatuli at 2:35 PM 9/21/2003

ClubSiRacer

Scrap the AFC and get a Hondata? You can always drop your base fuel pressure, but that pretty much makes using oversized injectors pointless.

Consider these calculations when figuring injector pressure changes:

Fn = New Injector Flow Rate
Fo = Original Injector FLow Rate
Pn = New Baseline Fuel System (rail) Pressure, psi
Po = Original Baseline Fuel System (rail) Pressure, psi



What this means is, if you drop your injector pressure from 40psi at idle to 25psi at idle using the 440cc injectors, they will only flow roughly 378cc which might solve your problem, but it is going to limit how much power the injectors can support, unless of course you have a rising rate fuel pressure regulator that can compensate under boost.

Edit: Why do I share the best information on others websites? Shame on me!

speedworks

do you have a vortec fpr