Whoaaa... that means the fan on the engine is sucking some MAJOR power!!...... I don't think the stock fan is that much of a parasitic drain!!
Gnarls.
I once had a fan clutch seize so that it always spun at full velocity, it not only caused a severe decrease in mpg but definitely started using up my HP on the highway so I could see that if it were not there you may at times experience a HP increase when it is in full lockup mode climbing a hill on the highway. Still I just run the oem fan setup.
