If you are planning to use it to lean more agressively on a carburated
engine, then I agree, it will not work well for that. I put an EDM-700 on
my Skylane with an O-470R. I still find the best leaning procedure is to
lean until the engine is slightly rough, then richen it up 1/4 turn.

However, an analyizer is a great diagnostic tool. For example, if on runup
you notice one mag is slightly rough, a quick look at the analyzer help you
diagnose the problem. For example, if a single cylinder is not firing, the
analyzer will tell you EXACTLY which cylinder has the bad plug. Or if all
the cylinders are sick on one mag, then the analyizer will clearly show that
too. Also, earlier this year, I had a manifold leak, and saw that the
1-3-5 cylinders were a bit "off". So an inspection of that side of the
engine found a manifold leak.

Guy



"Denny" wrote in message
ups.com...
On a low compression, low horsepower, carbureted engine, a fancy
analyzer is only going to waste your money and make you frustrated...

denny