I have to agree with you on the ESS tune, the removal of the cold start is a must, my wife hated me for installing the exhaust she said at start up it made the items in the kitchen (above the garage) vibrate
, so what I did was open the garage start it up and pull out quickly to the end of the drive way away from the house. I decided a week later to do the tune and have been happy with it, no complaints from the wife, kids or neighbors. sounds close to stock.