I have an eg with ek swap “ engine + wiring + ecu “ my voltage drops down to 11.5v while driving and the normal voltage for the car is 13v or 13.5v
I checked the alternatorand changed it
and the battery there is no problem while ideling after stopping the car it drops to 11.5v after 2 minutes raises to 12.5v then 13v
how can I stop the voltage dropping ??

 

It’s not a bug, it’s a feature. Its the alternator control strategy.