same problem here,i just planned on changing the alt. sometime soon ,think how many rpms the alt. is turning when the motor is turning say.. 6500


EO 98 CSVT, black, gunmetal exel 18s, H&R springs ,custom grilles, 35% tint,Hightower headlights,resonator removed,Magnaflow installed,FMS 9mm wires,K&N,Redline MTL 2000 Impala silver 2 inch drop 17 inch Exels