Ok since superchips will be refunding my money back on the junk tuner that I have i want to know. What do you know about Wait4meperformanc.com, Wheatley tunes and black bear tuners. Which one is the best and do can you give me some proof to back up your statements. I am gonna get a new tuner and i want the best i can get i dont care what the cost is. When i say proof i mean befor and after hp gains 0-60 times and 1/4 mile times. I have a 08 silverado 4.8 reg cab so if you have a vehicle similar to mine it would help me out a little bit. Thanks everyone.