I have a 99 ex 4cyl and there is a loud grinding noise coming from the back of the car when i turn the wheel left and when i am braking. I took it to a shop and had the brakes and the rest of the rear end checked out and they said both were fine. I have an Apexi N1 exhaust and I have put Skunk2 Lowering springs on. could those mods be part of the problem? Has anybody ever had this before? any help would be appreciated. Thanx