On Mon, 14 Feb 2000 ABeerCan@aol.com wrote:
> Ok, since the Dakota's run a speed density system, wouldn't I be correct in
> saying that all the head work, intake work, and other work helps, but cannot
> reach its full potential? I know that they have done this to the mid 80's
> mustangs (the 5.slows), so is there a conversion kit that would allow one to
> convert the Dakota from speed density to MAF? Speed density relies on a
> preset factory value based on air temp, tps reading, etc... MAF actually
> measures the amount of air entering the intake. So theorectically, I think,
> wouldn't all the intake/exhuast mods perform better if the Dak-a-do were
> converted to a MAF system? Just something I thought I would bounce off the
> abstract wall.
While its true that doing mods with a speed density system won't
allow you to reach the engine's full potential, the same can be said of
a MAF system. The "problem" in both systems is the computer. Without
the ability to directly muck about in the computer, neither system will
allow you to reach full potential.
For what its worth, all of the aftermarket EFI systems I have looked
at use speed density. I won't pretend to know why that is, but I
suspect its because speed density is more simple than the MAF setup.
The limitation in speed density is due to not being able to change
the parameters in the computer, but with the aftermarket setups,
that is no longer an issue. MAF should respond better to mods
within a certain range, but go outside of that range, and you're
in the same boat as the speed density folks; you need to mess with
the computer. There's another version of EFI also; I can't think
of the name for it at the moment though. Its basically speed density,
but without the MAP sensor. Its mainly used on wild engines which
can't maintain enough vacuum at idle for proper MAP readings.
-Jon-
.--- jon@dakota-truck.net -- or -- stei0302@cs.fredonia.edu ------------.
| Jon Steiger * AOPA, DoD, EAA, MP Race Team, NMA, SPA, USUA * RP-SEL |
| '92 Ram 150 4x4 V8, '96 Dakota V8, '96 Intruder 1400, '96 FireFly 447 |
`---------------------------- http://www.cs.fredonia.edu/~stei0302/ ---'
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