The tunes make quiet a bit of difference in the trans shifts & t/c lock-ups. It's not magic as in if the trans is suspect the tunes will not "fix" anything. My trans has 190k miles on it & I believe it works great with Bill's tunes, so much so that I was going to put a valve body but after putting the chip in I've decided to leave well enough alone. Like I said if the trans is good the tunes will make it better but if the trans has problems I don't believe tunes will help. JMO & you know what they say "opinions are like a$$holes" ... lol
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2000 F-250 SCLB 2wd 7.3 auto PHP stock-65t-80dd-120race-high idle-no start 4"tb exh, wicked wheel, 3 guages, AIS, coolant filt,
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