Im having problems with my idle, when i come off the highway (or going over 45mph at a constant) to a complete stop my idle is at 1300 to 1400rpm after no more than 5 seconds idle drops down to 600rpm and bounces to 1300rpm for about 6 to 7 seconds. ive been told (by an "expert") than i have a dead spot at 4ohms (not sure what that means) i really appreciate it if i could get some help pictures and DYNO information will be posted soon.