Which box you testing for Edge? I've been testing the Juice box with the Attitude for them. Have had it on for about 50K mi now, no problems that I can't live with. I sure wish they would get it on the market, its a real good box!! Their main problem, I think, is that it turns the A/C off intermittantly, all you have to do is push the A/C button off, then back on, and it works again, and the Attitude does not keep good records of the egt's and rpm's.
I just got back from my first trip running the Snow Performance water injection. I've got to post about it, it has cut the egt's down at least 200*, it really works good for towing.
Larry