Shouldn't a longer intake result in shifting the torque curve toward the low end? You're increasing the runner length which should decrease the frequency of the pulses bouncing off the throttle body and returning back to the intake valves.
Longer runners = better low end
Shorter runners = better high end
N/A mods:
Chip tuning - UCON or APR (discontinued I think)
Exhaust - Front to back with length of headers to match application
Internals - Cam, bore/stroker kits (Not cheap)
Intake - Less restrictive air filter, intake Spacer, or sized and tuned ITB setup (also not cheap)
E-fan is not really saving you power it's just loading the alternator. Converting mechanical energy to electrical, then back to mechanical. Alternator is not 100% efficent, so you need to spend more energy to drive the motor of the fan.
Stick with the stock fan or run a clutch fan if you wish to play around with that. E-pumps for street use are the same, it's mainly track applications that benifit from these mods.