Then I guess I would only want 2. I like watching the boost needle jump across the gauge. I got this reaponse from the company...
We have done this option before, and results in a really neat and usefull combination. The cost is $495 for the triple option which also includes any of the special edition start-up screens or bezels colors. They all run off of one cable plugged into the OBD2 port which immediately splits into three separate cables that are all 5' long.

 

That would be a very cool setup....better than running around with a laptop always hooked up. Two of those gauges in one of those SoCal Diesels overhead gauge pods would be the shznit IMO.

 

That's way cool...how about three of those in one of THESE

 

That would be pretty sweet. With that, and an A pillar triple pod, the truck will start to look more like a cockpit

 

I bought the two series set. They arrived yesterday so not installed yet. I also bought the wide band a/f guage. Now need to get a boost and an after market tach w/shift light and I'm set.