Uprev requires you to put the timing back to stock before installing the Uprev Tune. Uprev is a custom tune for the Titan (or whatever vehicle you purchase the tune for) and it does more than just advance the timing. There are several parameters it changes and gives this truck a solid kick from takeoff. The 2° advance is nice if you are on a budget, but it won't compare to an Uprev Tune.
2° timing advance = $0.00 - $90.00
Uprev Tune = $500.00
Uprev Osiris + $700.00
Check out the Uprev website and read about it for yourself. That is the only way you'll know if it's right for you.