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218 Posts
Discussion Starter #1
I just got a new superchips tuner and put it on the tow performace setting. Compared to my friends tuner which is about 2 yrs old my new one rips. I had his tuner on the same setting in my truck the day before I got mine and there is a night and day difference, so I stated all of that to ask if they changed there programming along the way?
 
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