"production" plane guy making the jump into A KF2. Had a 532, run out. installing a 582 Bluehead with an E gearbox, from Rotax Rick in Naples. Question being, ..... do I need to change the tach? Have heard from a few that the old not compatible with new bluehead, and sure dont want to be sitting there with a brand new motor, waiting to be flown, and a big ole hole in my panel as we wait for a tach. Any input, sure appreciated.....

The smartest man realizes how much he does not know.......