All the new tow haul systems do is to change the shift points by electronics It will keep you in certain gears longer. If you have a power stroke, or Duramax with high torque curves, Than I would use the tow haul. It will keep you in the torque range longer
Edited by: fhenn
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Frank and Janet Henn
2000 Monoco Lapalma
being pushed by a 2004 Jeep Grand Cherokee
Traveling with Rainbow the wonder dog and now with Sunshine the rescue Schnauzer.
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