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Discussion Starter #1
My 4.6 is rated to pull a 7200 lb. trailer. I have a 6000 lb. 5th wheel and it seems to be all my truck wants to pull. I've seen programming modules that you plug into your OBD outlet and reprogram your computer to get more horsepower. Do these things work? I would appreciate any info on these or any other way to trully increase towing power.
 
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