Gasoline Engine: Tunes are based on Octane, make sure you choose the correct octane rating based on the octane you are running in your vehicle.
Diesel Engines: We offer a few tunes based on what you’re going to be doing with your truck.
Performance: The most aggressive preloaded diesel tune. Good for everyday use, racing, or economy but not recommended for any type of towing.
Street: Less power than Performance. Moderate gain over stock, safe for light towing, under 5k lbs.
Tow: Should be used when towing any significant load. Shifting is towing centered
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