i searched but came up empty. ne ways, i notice that when i have my stereo on that my idle jumps around. when my stereo is off it idles decently. i thought that maybe the bass was just causing the stock tach to move but i popped the hood with the stereo on and the engine didnt sound smooth. i turned off the radio and it was fine. i only have a 250 watt amp hooked up to one twelve, so its not a massive amp drawing to much current. any ideas? thanks.