Granatelli Diesel Mileage Miser

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Do you want horsepower and torque gains while decreasing fuel consumption? Granatelli's Mileage Miser is the product for you. Every Mileage Miser is guaranteed to give you an additional 50-HP and 150-ft./lbs. of torque while increasing 3-MPG! This plug-in-play device alters the factory tune to provide more performance and efficiency.