Originally Posted by Zebra99
Mine is definitely from 2011 so it may actually be the G5 board.
Is it then a matter of changing
Boost targets in the set fields? I've set it how it was described on the firmware updated for march 2012.
You have the G4. G5 came out this year like couple months ago I believe. And what he means is that if you have an older Jb4 harness, you'll need to change and mess with the wires a bit to hook it up with a G5 board.
To answer the OP's question, a G4 is fine for you if youre only gonna do DCI and Tune but I doubt thats all youre all gonna be doing lol so get the G5. I just made the switch to the G5 from a G4 and its more agressive