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gear swap or programmer?

  1. 08chevy2500
    08chevy2500
    getting tired of my truck shifting in and out of overdrive with the 325's. im so much worried about the gas mileage, for one its a 6.0 and we all now how that goes. i dont think i gear swap will be worth the investment, do you think the programmer will do the trick..ive dealt with chips before in diesels, this is the first gas truck ive owned so any input would be helpful..
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