Not sure if anyone here has any experience with these units but i'll give it a shot none the less.
I just installed the unit and everything seems to work okay except the egt feature.
Everytime I turn the car on I get a reading of 392 degrees steady at all times and it will not move, I retrofitted my greddy egt probe as per their instructions.
The Zeitronix guys say that I reversed the wires on installation so I went ahead and reversed them again but still same thing.