20c 4s lipo or 30c 3s lipo??

[T-Bro]

Thanks! Now I do have an external Bec on the 80 amp mgm does that help any? (I really love my mgm's If not I'll probably just sell the 2 I have and upgrade.
Also I use my shulze 18.97 97/127 amp esc for my e-maxx and Bigmaxximum set-up and in my car at times also. So since this pack creats 120 amps, when I plug 2 into series for 6s for my truck, is it still 120 amps and just 3 more cells? Or will that be creating 240 amps and burn my schulze up! I really can't afford to burn up a $340.00 esc just because of ingnorance again....

Also I am sad to say that's the main thing I still haven't learned yet... How to set the timing? Where can I learn how to do this correctly?