I want to buy a Flashcal F5 Superchip and noticed that I could save $150 if I bought it off the Facebook marketplace. Is it safe to use a used (the one I found claims to never have been used) version of the Flashcal? Or if I would run into any issues that would not make it worth saving $150?

 

I would suggest that instead you buy a license for the Jscan app on your phone and buy a BT dongle off Amazon. For $40 you'll have a lot more of a dynamic tool.....both programmer and diagnostics.