OK, splain it to me, Lucy. Just exactly WHAT are performance pulleys for an N/A ?????????

Belt on N/A drives PS pump, A/C compressor, alternator and water pump.
Which one of these provides performance by being driven overspeed / underspeed ?

Wait, wait, wait, if the battery is fully charged, why couldn't we engineer the alternator to be a motor and provide a few seconds
of KERS like the F1 cars ..... :-)