Way to measure HP?

[Bruce Plecan]

Can't you use the original neg side of the coil for triggering a comparator
instead of using a plug wire, and divide by how ever many cylinders your
running?
Basicly use the tach connection, and a divide by n chip.
Bruce




From: "Daniel Houlton" <houlster at inficad.com>
> Rob O wrote:
> > There is a relatively inexpensive program (I think it's called road
> > dyno) that does just this and I can see it being a useful tool in the
> > same way a G-tech Pro is. You can't really expect exact accuracy from it
> > but if it is repeatable and consistent then you have a method of
> > comparison without spending the $$$ for time on a chassis dyno (which is
> > not exactly the most accurate thing anyway).
> Hi Rob,
> Thanks.  I think you're referring to Home Dyno?  I do have that
> actually, and I did find it to be very accurate compared to a
> baseline run I did on a chassis dyno.  It was still kind of a
> pain to use though as I'd have to clean up noise in each
> recording to get a reading.
> It got worse with an MSD ignition with it's 3 pulses at lower
> rpm.  I can still make it work, but it takes a while.
> > I guess I kinda wandered away from your original goal of instantaneous
> > HP readings but while that would be something "neat" to show off, has
> > limited usefulness for someone like me who's more concerned with getting
> > from point A to point B the quickest
> >
> > Rob_O
> What I'm looking for is an accurate hp and torque curve.  I
> was thinking the MAF reading might give this more directly
> through measurement than the Home Dyno software does through
> calculation.  It doesn't appear to be that way though as several
> people have pointed out.  Too many variables effect the V.E. for
> it to be very accurate.
> thanks
> --Dan
> houlster at inficad.com
> http://www.inficad.com/~houlster/amigo.htm

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