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  1. Long term performance and reliability with a tune

    Colorado Diesel Tuning
    I haven't read much, or spoke with anyone who has a tune in their truck and am wondering if anyone has had any issues, and what they think of their tuned truck versus stock over the long term of a few months or more. I had a 3.6 gas truck for 8 months before I traded it in for my diesel. I...
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