Originally Posted by CJPatel
I am ordering mine today, but can you please tell me what the difference with the G5/G4 board is. Also, what the 2 step relay does.
If it helps, all I really want is more juice outta the car, and its still under warranty. Car is a 2009 MSport E92 with 28k - 6spd
+1 and is there a upgrade available or do i have to buy the whole tune again, I got g4 right now