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Discussion Starter #1
I bought a 97 250 about a year ago, the only mod it had was a chip of some kind. Since then I've put an exhaust and intake on it. I'm happy with the way it runs but the transmission shifts really hard. Does a chip alter shifting in an auto???

It has 142k miles, original trans and has always done this since I have owned it.

Any feedback would be greatly appreciated.
 
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