Tuner for towing on a 7.3L Powerstroke

I did a lot of research when I chipped mine. I was most concerned about longevity and not doing any damage to the engine. I used a chip developed by Beans Diesel Performance. They develop their tunes from scratch and are all dyno tested.

http://bdpshop.com/bdp-products/7-3-custom-chips-tuning.html