I've got an EFIS D10A, EMS D10, and HS34. 4 cht, 4 egt, MAP, Red Cube transducer, oil pressure, oil temp, carb heat...
The 3 Dynon units are on a DSAB bus that's been working ok for the 20-ish hours since the setup started flying - plus loads of stupid test time. They are each powered on...