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thunder, I have the Edge/Juice on my 2001 7.3. What do they mean when they say you can "stack" another unit on top? And what do you recommend. Thanks, Dave

You can "Stack" the edge evolution. The evolution reprograms the ECM and edge juice modifies the signal coming out of the ECM. I am a GM man, I have had excellent results with the gm units both LB7 and LLY....limited success with the 6.0's...they have a hard enuff time keeping those together stock. I have not stacked a 7.3 but I have talked to a couple of people who have and they had dissapointing results as faras power results.

Thanks for the info I bought one for my truck with the in cab moniter.

Both of these have the in cab monitor.