I have a Pioneer car stereo and it sounds fine in FM. When I play a CD or connect my IPod the loud random pop noises start. It drives me nuts. I also have an MSD ignition but the pops don't equate to rpm or anything. They are just random. If I disconnect the antenna the same noises happen. I suppose the antenna input picks up the noises then. I have my battery in the trunk and the large cables run down by the passengers feet in the corner along the door jam. I suspect my MSD box which is mounted on the passenger inner fender close to the heater motor. Any ideas? Thanks.