I have been looking at getting a chip, but I also want a monitor. This is gonna sound dumb, but I am new to diesels and have been trying to search around. When you get a chip, say edge/attitude, are they stacked but in the same unit?? When I look at something like ebay they show only one unit? Can a monitor be purchased seperate from a chip?

Reason I am asking is that I have the money to get a chip now, but might be a while before I can afford a monitor.