setting ignition curves without dyno

[Jason Weir]

Roger Heflin wrote:

> That is actually more or less what the home dyno kits does.  You rig a
>
> tape recorder to a inductive (timing light type) connector to the tape
>
> recorder inputs to a spark plug wire.  You then take that data and
> feed it inot a sound card, and the program figures out how fast your
> engine was going at each time.  With this info and given car weight,
> and gear, you can get pretty close to horsepower.  I would guess that
> over the same conditions and over the same speeds that the results are
>
> pretty easy to repeat.  And in this case the dyno data is exactly the
> same load as you get when you are driving.

I just ordered the Home Dyno software, I should have it in a couple of
days, I'll let everyone know how things turn out... For less than $50 I
think it will be a fairly descent tuning tool....

--
Jason Weir
88 Wrangler - 258 Chevy TBI
Fayetteville, North Carolina
http://home.att.net/~jweir  --- Jeep Home Page
mailto:jweir at att.net