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Larry:
These are my thoughts on the issues of deciding which engine monitor to buy.
You need single digit reads on EGT and CHT for good trouble shooting and lean tests, and the ability to download the data. In my opinion, all other features pale in importance to those two.
That leads one toward the UGB-16 by EI and the EDM 700/800 series by JPI. The GEM is improving and if it now satisfies those requirements, I'd throw it into the mix. The 1000 has one big problem. It has only a 5 degree resolution which is quite limiting in many ways. I can't for the life of me figure out why they did that. As soon as they address that deficiency, I would recommend them as well.
Single digit resolution and download capability, then after that, which ever one you like for whatever reason you like it. Oh, also, it's VERY helpful to have FF info in them. Not necessary, but being able to add it later (if you decided not to get it now) would be an important feature that may make life easier and cheaper later on.
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Walter Atkinson
Advanced Pilot Seminars
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