Quote:
Originally Posted by SlingShot
When the engine was certified at 426Hp, it was with all pulleys attached. When the power steering pulley is disconnected, and replaced with an electric pump, the load is decreased. When the load on the engine is decreased, the certified Hp will in fact increase. The LS3 without all belts and pulleys, actually produces around 480 Hp.
The amount isn't all that great, but there is an increase of power.
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The power steering pump being electric draws power from the electrical system in the car, which gets its energy from the alternator, which is connected to the flywheel. The electric pump may be a bit more efficient than the mechanical pump, but it doesn't create energy from thin air. Its power comes from the engine as well. Even if the pump were running from the battery, the power taken from the battery eventually needs to be replaced, and that energy comes from the alternator and hence from the engine in the end.