Posted for "Art/Sue Bertolina" <artbertolina@earthlink.net>:

I'm trying to determine the difference between the EDM-800 and the 900. Does
the 900 add enough to your panel
to justify the added cost ?. It will be monitoring a TSIO 520BE that has
been built to TSIO 550 with hi-compression pistons and reworked turbo's. I
intend to
run the engine Lean of Peak at cruise. If anyone out there
knows these instruments I would appreciate your input
Art Bertolina

[ the 900 has MAP and estimated %hp displayed -Rob ]