love it. had the diablo sport trinity before it. it was quirky, didnt work, had to wait a month for updates and finally had to end up going to the dealer for a reflash to get the truck running right again. diablos support wasnt too good either...not to mention assembly of the brain. I got the edge out of the box, downloaded the specs, and by morning had a software upgrade for the tahoe. it works awesome. and quality is far better than diablo sport. run it in extreme mode usually and definitely night and day between stock.