I installed the VF Engineering Hex tune about a month about. It was a super great accelerating and shifting car and it still is. It seems the acceleration and shifts are sharper, but I am definitely no expert, as you may be able to tell. As far as more horsepower goes, I really cant feel much difference, a dyno would be needed and I have not done that. I did use the Thrust Mode with it. If I knew how to use the timers on the dash maybe I could give the 0-60 times but each time I launched it I was at 80 mph by the time I looked down at the speedo!

Like I said, it was super great to begin with and it remains that way. The hp gain I received is still a negligible amount (about 9% was stated to me) from around 580 HP to begin with. This is my first mod and I am pleased with it.

I hope this helps anyone making the decision.