2006 6L questions?

[Fatlete]

I have a couple of questions,
1, How do I know what version I have on my programmer?
2, How do I change it if it is an old one?
3, can you stack these with other units?

Any help would be nice.
Thanks

[sohfast94]

1 When you power up the predator it should say it in the top right.
2 Download DSDL by going to the support>Downloads section and choose your part number. (DSDL=Diablosport Downloader)
3 Stacking with a 6.0L is generally not recommended unless you have head studs etc... They are prone to puking coolant is why.