high speed fan


New Member
Jan 22, 2007
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 for all the questions. ill try to limit them. :D
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