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Question On 97 6.5l


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A friend of mine just bought a 1997 GMC Sierra 3500 with the 6.5l diesel. He was a trucker and is not down sizing I guess. Anyways he is looking into chips or tuners for his truck to try and get the best performance fuel mileage wise out of his truck.

 

I figured this would be the best place to ask for some advice on good tuners or what ever. Or if they will even work on a 97?

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