> Posted for "David Leonard" <Daveleonard@cox.net>:
>
>
> > Those are the Rochester injectors I have in my 3-barrel TWM throttle
> > body.
> > Got 'em at "Smoky's"; the local speed shop for $84 each.
>
> Rusty, thanks for the tip on the Rochester injectors.  I must have
> misspoke, I am using the 2-barrel TB sold by Atkins just like you.  I
> know that the EC2 can take either high impedance or low impedance
> injectors, but does anyone know if it is ok to mix an match as long as
> the resistors are in place for the low impedance injectors?
>
> As for the flow, I don't expect them to match exactly, but was hoping I
> could smooth out any mis-match by adjusting the mixture map.
>
> Dave Atkins seems to remember that the injectors he sells are 75lb as
> they are meant to run N/A as a single pair (2 only).  Does anyone know
> how much of a mis-match could be compensated for by re programming the
> ECU?
>
>
> David Leonard
> The Rotary Roster:
> http://members.aol.com/_ht_a/rotaryroster/index.html

The EC2 can adjust for about a 20% mismatch in primary & secondary injectors
but the higher the missmatch, the more trickey it is to tweak the MAP table.
This should be a lot easier when using the EC2 with the soon to be available
EM2 (engine monitor) which will have a graphical map programming interface
which can be used to adjust the table either on or off line (engine running
or not).   It is much easier to see if there are "holes" in the MAP table
that are not setup and you can see the setpoint where the injectors are
stagged.

Yes, you can mix high & low impedance injectors as long as you use resistors
on the low impedance ones and not on the others.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com