Tracy uses manifold pressure and RPM as well as manifold air temp I think.
No throttle position sensor.  Whether it uses it  or not it would be a

good idea

to use manifold air temp as an input. This would anticipate the conditions

that cause

detonation in a turbo engine and automatically richen the mixture and/or

retard

the ignition to prevent detonation.

Paul Lamar

Tracy's unit uses manifold pressure, RPM and air temp for injector timing
calculations on processor "A" of his unit.  Processor "B" uses only Manifold
Pressure and RPM and leaves the temperature sensor out of its circuit to
elminate it as a potential failure component.  So you normally want to fly
with the "A" processor active.

Ed Anderson

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