When I scroll through the artist or change a song or do anything on Ipod source my subs make a very annoying thump sound but when I go to change the song and push next it make a double thump sound. Its driving me crazy !!!! any ideas !! Thanks

Well between this and your other thread I think its safe to say that your unit is defective, not installed properly, or you're not using the proper accessories with the unit. (iPod cable, Map Disk)

I also noticed that when I put in a dvd my bypass it works but when i go to accelerate it stops playing and says its prohibited to view a dvd while in motion or w/e im thinkin my ground is crappy ?

Something is certainly wrong.

Well I know this ... it only goes through my subs though with the thumping and only does it on ipod source it also does it when it comes to the end of the song and the radio does the change on its own .... also have a little engine whine but if i run a ground and put it on my RCA's it doesnt do it near as bad !!! I juss need some insight !!