Originally Posted by Mike@N54Tuning.com
The G5 includes a lot more features as has been mentioned but they are mainly intended for more heavily modified cars. For tune only type cars I think the main appeal with the G5 will be its new isolated boost control system. It features stronger and more linear throttle response and improved boost targeting. That aspect will benefit tune only and heavily modified cars alike. It's in ALPHA now but when it gets through to BETA I'll throw up a post here with more information on it. Until then here is a quote from the other forum explaining a few of the differences.
Thanks Mike you made it clearer along with the other posts