when I first start my car the voltage is usually between 14.4-14.6 volts but when I start driving it quickly drops to 12.7-12.8 and sits there. I've been told that this is a gas saving mechanism but seeing as I will be running roughly 3000 rms worth of system I need my voltage to float between 14.3-14.6 while I'm driving. is there a way to bypass this?