2015 si, just got flashpro and started tuning with etunez, going great. noticed that my charging voltage is pretty low when cruising. charging at 12.5v. when i let off the throttle it goes up to 14.5v. had the economy mode turned off on the last revision but the same issue. i charged and tested the battery today at work, battery is better than fine. went to go home and service charging system came up and was only charging at 12.1v. checked battery terminals, they were kind of shit so i cleaned them and that issue was gone. thought maybe on the drive home it wouldnt drop below 14v but it still did. anywone else have this issue? i emailed the tuner asking about it but im sure the weekend wont provide any emails back until after the weekend. could this have anything to do with the engine grounds? have a hard time believing that as i have the stock intake and its only 4 years old.