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Originally Posted by L2C
Just got my 08 H2 back with the new magnacharger on it. It is faster than before and it stays at 70-80 mph on freeway with no problem. I am running 37" tires on it, does anyone know if I should change the gears out and beef the tranny up. The tranny is a 6l80e
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has your mileage gone down significantly ???