
This thing destroyed my computer. Did everything right but it went halfway through the process and stopped leaving my truck dead and had to be towed to a Chevy dealership. Not sure about the performance or mileage increase as it never worked and I will never use anything that changes my computer ever again. Was I just a loser who got this bad product? May be. Maybe you can be too! Do not take any risks. It's not worth it.

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