Well, interesting. Looks like someting I would put together, lol. But,
to keep my tuning simple I just use the plain old air density. I go
back to basics which use absolute pressure and temperature only and
simply calculate the density at any given time. It is only a few
calculator strokes. If I want to see how density of teh ari affects the
current tune (carbed and mechanical injection) then I use the density
when the tune was established, calculate the new density and ratio it to
see how much of a change is needed. With my curent mass air flow meter,
I don't even have to do that. The brain box measues the mass of air
directly and then figures fueling as appropriate.
Density altitude meters can be had for, I think, about a 100 bucks. I
bought an old airplane absolute pressure gauge instead.
YMMV
mayf
Wester Potter wrote:
>This may help to explain the figures Rick Gold posts on the door of the ERC
>trailer and why they can change during the day.
>
>Begin forwarded message:
>
>
>
>>From: Thomas Kirkham
>>Date: August 5, 2010 3:07:12 PM MDT
>>To: Wester Potter
>>Subject: air density
>>
>>Interesting article on air density.
>>
>>http://wahiduddin.net/calc/density_altitude.htm
>>
>>
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