Hi Ashley,
I have my idle speed rpm set on 850 rpm.
The battery is good, I have replaced the old one because that was my first thought to.
What happens is that the moment the fans are on and I hit the clutch or put my foot of the gas the rpm drops to 470 and the engine runs to lean 16,2 - 17,1 on the AEM wideband.
The voltage drops to 9,7 on the voltmeter.
I have driven with this set up for almost a year with the OEM ecu, no problems accured.
Thanks,
Vincent