I took my car in for large clouds of smoke after 5 to 10 min of warm idle. They claim to have never seen it and won't touch the car till it's back to factory specs. So if you have had a smoke issue (A)was it at idle or acceleration and (B)is your car modified? I called CPE and they said it's a known issue with the stock cars but i need help proving it to the dealer. I've printed off other threads but want to give everyone a chance to chime in.