Join Date: Feb 2009
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Well, depends how long he has had the tuner and how he drives... 100HP mod and no tranny changes is asking for trouble in the long run... A valve body or shift kit is really the way to go... Just did transgo on mine... My sister pulls a 3 horse GN and had a big improvment in hers after I told her to get a shift kit/ valve body done... not sure what one she used but went from doing 45mph to 65mph on same hill... truck is stock otherwise..... What brand of programmer... some are obviously better than others...
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ASE Master Auto Technician.
2001 Excursion 4x4 7.3, 4" lift & exhaust, Transgo, Issopro gauges. 200A DB alternator.
PHP Phoenix w/ Minotaur tuning pkg.
2000 International 4700 T444E