Is a Super Chips Programmer safe for my 2002 Dodge Durango with (129,000) high mileage?

I am not familiar with the Super Chip. I installed a Jet Hyperchip in my 1996 Ram 1500 with a 5.9 (360) engine about 110,000 miles ago. The truck has 227,000 miles now and is still my everyday transportation.
 
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