Originally Posted by FirebaseD
This mod will help your engine:
1. You do not gain HP but you do keep what you got.
The reason I state number 1 is: If the car is able to produce electric current without any resistance there is less of a demand on the engine to spin the pulley affixed to the alternator... saving a horse or two - this is a known fact. hooah At the same time if your engine is under less load, it will use less fuel. "end of story".
The amount of power demanded by the vehicles electrical system is what determines how much mechanical power (hp) is required. A 5hp "increase" is equivalent to about 2.8 kW (electrical), assuming a 75% efficient alternator. For a 12VDC automotive electrical system, this means you would have to reduce the alternator load by about 235 AMPS!!!
Most automotive alternators are in the 65-75 amp range... total capacity at full load (full load is not a common situation - normal operation is 10-20 amps). Unfortunately, you could only save "about a horse or two" if you completely remove the alternator and left it in the garage.