A mainstream tuner like diablo sport or anything like that is on the more conservative side of things tuning wise. They are called "can" tunes and are thought up with the intentions of being used everywhere in the world, much ike stock tunes and dontreally push the envelope anywhere.
There is always a freak accident as with anything, but you are 99.99999999999% safe when using a tuner like that
2011 Big Horn 4x4 -SnowWhite-
1 7/8ths catless ARH ceramic coated longtubes - Sport mirrors-55W 5000K HID low and fogs-LED EVERYTHING