Originally Posted by ChuckS
Personally I would not and do not see a reason to install any after market tuner, etc.. that duramax will have more torque and power than you will ever need..
My 2007 is stock.. it gets 13.5 pulling an Alpine fifth wheel.. 20 mpg without.. ive seen a lot of guys install tuners and programmers and have short longevity on the drivetrain.
It’s your rig... enjoy it....
^^^^ X2 I totally agree !!! I towed a 34' Holiday Rambler (10,000 pounds) travel trailer with a 93 Ford 7.3 NA diesel. That had 185HP/358 pounds of torque. I seldom had to downshift that old 4 speed E4OD transmission and got 11 towing/16 solo MPG.
Today's diesels from any of the three major brands has more than double and sometimes triple the HP/torque with a much improved transmission. For loads up to the max rated towing weight, there's just no need to "chip" a modern diesel. Maybe for "braggin' rights" but certainly not for "needed performance".....
"Chipping" today's diesel engines is, in far too may situations, just asking for problems that are non-existant in a stock engine configuration.