[chris227]

Originally Posted by gblaue

Actually, it's not RPM. It's you amps communication wire to the high speed CAN bus in the vehicle. Your are taking away the amplifier's knowledge of speed and engine RPM. Basically, you have no speed compensation, in addition to noise/vibration cancellation.

Here's an interesting experiment. Leave the connector unplugged overnight. See if the amp wakes up. The wire in X3 can serve one of two purposes, HS CAN or an Enable line (Don't get excited, it's just a pulse). It is configured when it's manufactured for either function, not both. Yours is CAN. If the amp doesn't wake up, just plug it back in. The reason that your amp is still working,I i suspect, is that the CAN bus is alive when you have your doors and etc open, so the amp is awake when you are unplugging it. Let the CAN bus go to sleep and see what happens.

Will check it in the morning. Been unplugged and car off and locked for about. 2 hours now. Will report back what happens. Hope I can just leave it unplugged. Sounds better that way.