can we tune the 05 Pontiac G6 with the 3.5l, I just bought one today is why I ask, and I cant find it anywhere?? I did find where someone called it a PO5 controller. I am getting an amazing 31.9mpg average "first day jitters" LOL but I would like to play (tiptoe) with some of the features in EFILive (lean cruise)