Quote: Originally Posted by
HCCAFan 
I might have to update my ground and shit and see if that helps. I actually wanted to go to a smaller battery though or relocate it to the trunk. Both of which will probably lower the voltage more.
Anywhere between 13.1-14.7V is fine. The ecu will vary the voltage a bit with battery temperature and load.*1
imo, A good refference for this type of info is the Factory Service manual, and not random know-nothin chuckle heads on the internet.
*1: page 8F-20 in service manual
