Welcome aboard!

I love the 2006 Duramax package. Think of it as a 'factory chipped' LLY Duramax. With that in mind, realize that in stock trim, you are running closer to the ragged edge of what the stock Allison torque converter can hang onto.

The stock variable-vane turbo is nearly bullet-proof mechanically, but is also the first componant to overheat when fuel rates are increased over stock. In hot, extended, and/or mountainous towing conditions, a heat soak begins that can cause the entire cooling system to reach its 'tipping point', thermally.

Have fun - with your knowledge of what it takes to make 1000hp and keep parts happy - you'll have no problem appreciating what happens when you push stock drivetrain componants under varying loads, power levels, etc. My opinion is that Edge tunes are 'smokey' and made for street racing, or light towing. Kennedy diesel makes a good ECM based tune for daily drivers, that delivers the mileage while making 'big block' feeling power.

My overall heavy towing (GCWV >18K#) observation, with 100K+ total towing miles on two 2006 trucks is to run it bone stock (and with your foot to the floor if you want) - or chip it slightly, and then be conservative with your right foot, who else you let drive the truck, and keep an eye on the trans temp and water temp gauges.

http://www.thedieselpageforums.com/t...ad.php?t=33987

Have fun!