Sometime in the not-so-distant past we would say about 1998 or so the multi-probe engine monitor graduated from the nice-to-have-in-the-panel to the certain to be found, at least in airplanes with large displacement six-cylinder engines or turbochargers. And just as certainly, it’s way overdue for a makeover. Although the basic device has been improved incrementally since it first appeared, we’re just as tired of the abstract dancing orange bars as is everyone else. It’s time for something new and an upstart company called Xerion Avionix promises just such a product with no less an ambitious name as the AuRACLE and Auracle II, both multi-probe monitors with lavish color screens that…