2017 PSD numbers are in FLT Offical ?

And because you read it that makes it true ? I remember in the 70's and 80's there was a magic magnet you could add to your fuel line to increase mpg. Did it work ? Nope. Did it sell ? Initially you bet it did ! Until people figured out it was a marketing gimmick. You don't need 440hp and 925 lb.ft. of torque to tow with a pickup. The truck itself limits what you can tow. If people think that this will make them able to tow 30,000 lbs with a pickup they are nuts IMHO.Keep the HP and TQ numbers they have and increase fuel economy.

2001400ex wrote:

Turtle n Peeps wrote:

2001400ex wrote:
Most not so much emission compliant. However, a tuner can add MPG and make the truck drive better without changing any emissions.

How exactly is this magic done? 3 big companies in the US would love to know how to do this. Billions of dollars are at stake! If you know how to do this, please tell us!

Ask the tuners how they do it. I just know from what I read, a tune on a stock truck adds MPG and makes it drive better.

http://www.duramaxforum.com/forum/2011-lml-performance-parts-discussion/253978-duramaxtuner-efilive-lml-tuning-review.html#/forumsite/20663/topics/253978?page=1