I have a guy in town wanting to sell a used Flashpaq 1815, he said he would let me have it for $120...

Thats a steal!...

Question is will it support my truck?
I also read the possibility of it not being returned to stock mode or something and not being able to work on another truck ever again??

Superchips.com & Flashpaq.com
I believe contradict each other on saying what the 1815 will support.

Anyone with a clue and any advice before I blow Benji & Jackson for nothing?