I have an V2 that I picked up back in 2008 to tune a duramax. I picked up an cummins and am wondering if the V2 works on the cummins if I update the firmware? The reason I'm asking this question is that I see EFILive now sells and V2 for Cummins and one for GM. Do I need a specific one for Cummins?

Thanks,
Joshua