I Have a 2002 Dodge and just put an Adrenaline in it. I do not notice much of an increase from level 5 to level 10! I do notice a little but not what I think it should be. I called tech support and they thought that it was probably my pump tap wire. I have the Stealth cover and I checked the voltage like I was told and it did have 12.3 or so volts. Any help would be greatly appreciated!