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The SCT CAL II lets me activate the high speed and low speed fans to cool the engine sooner. is this fan belt driven and eating horsepower? or is it electirc and is good for performance? i lowered the start temp of both the low and high speed fans by 20°. am i helping or hurting? and sry...

Are there 3.73 gears made for the 7.5 inch v6 stock axel? the guys at ford racing said that they might not fit into the gear housing? does anyone know about this? anyone done it? thanks

I recently bought a SCT xcal II tuner. I'm not to sure what to do with it. I would like to adjust it for maximum hp. can anyone with a 06 v6 manual tell me the adjustments they made with it? the percent changes and such to the fuel air mix and other stuff? thought it would be good to...