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I have over 500 hours on my IV-P with the VM-1000 and am pleased with the system.
The display is transflective so it is readable in all lighting conditions. I would
recommend a separate dimmer control for the display backlight. The IV-P requires
more engine management than the average light plane so the features provided by
the VM system are useful. The fuel system is as accurate as your calibration.

To improve the reliability of the system I soldered all electrical connections,
including CHT, EGT and TIT thermocouple wires (where I used silver solder). I also
replaced the factory provided wire with aircraft quality Tefzel wire.

Do not use any crimp on "Faston" type connectors as they will fail. This is
particularly true for the temperature and pressure sensors. The only electrical
problem I have had to date is due to a Faston connection (there are only three in
my airplane and two of those are on the Hobbs).

Brent Regan