The best alternator upgrade is to re-wire the 4 terminal connector to the alternator. Stock it has the single brown wire that goes to the dash light. Lose that and the alternator stops charging. So, grab another pigtail that has at least three wires/connections: the S, F, and L terminals (letters are molded into the connector body).
The L terminal stays the same, it is the brown wire going to the dash light.
The F terminal, wire it to a PNK/BLK wire that is hot at key-on. Can get it from the EGR solenoid or wastegate connector (among other areas).
The S terminal, grab either of the large feed wires that used to go to the fan delay relay, or the PowerMaster. These wires go directly to the starter power and then on to the battery.
Powering the F terminal will cause the alternator to charge even if the dash lamp feed is lost. This corrects the most common cause of no charge from the alternator.
Connecting the S terminal will cause the alternator to sense the vehicle voltage at the starter power feed. This makes up for the voltage drop between the alternator and that point. Will typically see at least a 0.5 volt increase in overall system voltage.
RemoveBeforeFlight