Alternator Pulley Question

[yaris-me]

Originally Posted by MGargano

On my car, for some reason, the voltage runs ~14.1 while I'm moving at a decent speed. At idle/lower RPMs, the voltage drops to ~13.5, with or without the amplifiers, etc on.

I'm hoping this overdrive pulley will allow for a higher/more consistent voltage output at idle/lower RPM.

You don't need to change anything, unless you're increasing the electrical load at idle, in which case it would be better to put a higher output or larger alternator. Basically, the alternator will increase output with increase in demand. In other words it is load sensitive.

That being said, the xB has a larger alternator for increased output for audio upgrades. That was anticipated because it is geared for the youth market.