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Discussion Starter #1
I just bought 2001 GMC Sierra 2500HD 4x4 duramax with allison.

What is the easiest way to tune it? Maybe little more power and fuel consumption better. I dont have efi live, hp tuner etc.
What is the cheaper tuner scanner or what is a good proven tuning box?
I know that cheap is not best but enough that stock transmission will survive : )

I live in Finland and this area isnt speed shops that could help me : (

I hope you could help me : )

Br. Jussi
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