I had the Edge Juice on my 04 GMC D/A and ran it on level 2 when towing and level one when not. That gave me all the power I ever needed. It didn't have the EGT or Boost readings that the Attitude gives, but it was also less expensive. Couple that with a good air intake and four in exhaust, you can light up the tires. Take a look at this forum: [SIZE=-1]http://www.dieselplace.com/forum/index.php. Some of those guys have dually's turning fantastic 1/4 mile times. Lot's of ideas for making power.[/SIZE]
John