[T3] Giving up Stock FI

[Mike Fisher]

Good to hear somebody built a good running 1776 w/D-Jet!
We heard a lot of whining about some of the earlier attempts.

On Mon, Dec 24, 2018 at 9:37 AM Phil Hof <phil.hof at ostronic.org> wrote:

> Regarding gas mileage, my ’71 with almost-stock D-Jet gets about 25 in
> normal use, which includes short (5mile) trips to work, errands in town,
> and occasional cruises to the coast.  On the last couple of highway/freeway
> cruises (Cost Rally and Meet in the Middle) it was more like 30-32.
>
> My setup is a 1776 with larger injectors, and tuned a few years ago using
> a F/A meter with the sensor right at the neck of the resonator where it
> clamps to the main muffler body.  Now that it’s broken in, and after I
> rebuild my distributor, I’ll probably recalibrate the MPS and do a few
> tweaks to smooth transitions and improve the in-town mpg a little.
>
> What’s interesting, is that this difference of maybe 20-25% between
> highway and town driving is much larger than it used to be.  When the car
> was pretty new, and stock, it didn’t really matter how I drove.  I could
> feather-foot it, and get maybe 33-34; if I lead-footed it, it would still
> rarely drop under 30, more like a 10% band.  I attributed this to the FI,
> which would seek to have the right A/F mixture better even under widely
> varying loads.  So either that was a myth, or i need to lean out mine a
> little under power and transitions.  I figure I’m a little rich on
> acceleration, but pretty good on cruise.
>
> -Phil
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-- 
Eugene, Oregon

http://s169.photobucket.com/albums/u236/mr_bojangles500/
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