Well, I almost have completely gotten rid of it, there is a minimal amount, like barely hear it when there is no volume. After talking to a couple people that install stereos and have had funny problems, I took their advice and did 3 things that drastically helped, keep in mind I had already done the regrounding and such, and still had it pretty bad.

1. Ran the RCA's through the center of the car. . . There is less of the car's own wiring there for interferance.

2. Made sure the low noise RCA's were put in the right direction. . . My installers screwed this one up. For those of you who don't know, if your RCA's have arrows on the insulation, the arrow points to the amp.

3. Adjusted the gains a little lower. . . Sometimes it is turned to just the right place where it will amplify the alternator. . . I lowered mine just a small amount and it went away.